| slovo | definícia |
Micro-
(gcide) | Micro- \Mi"cro-\, Micr- \Mi"cr-\ . [Gr. mikro`s small.]
A combining form signifying:
(a) Small, little, trivial, slight; as, microcosm,
microscope.
(b) (Metric System, Elec., Mech., etc.) A millionth part of;
as, microfarad, microohm, micrometer.
[1913 Webster] |
micro-
(foldoc) | prefix
atto-
exa-
femto-
giga-
kilo-
mega-
micro-
milli-
peta-
pico-
tera-
yocto-
yotta-
zepto
zetta-
1. An SI prefix used to multiply the value of an {SI
(Système International)} unit by some power of ten.
2. In mathematics or programming, a
prefix operator is one that is written before its operand. In
a programming language using prefix notation, all operators
are prefix operators.
(2014-07-08)
|
micro-
(jargon) | micro-
pref.
1. Very small; this is the root of its use as a quantifier prefix.
2. A quantifier prefix, calling for multiplication by 10^-6 (see {
quantifiers}). Neither of these uses is peculiar to hackers, but hackers
tend to fling them both around rather more freely than is countenanced in
standard English. It is recorded, for example, that one CS professor used
to characterize the standard length of his lectures as a microcentury —
that is, about 52.6 minutes (see also attoparsec, nanoacre, and
especially microfortnight).
3. Personal or human-scale — that is, capable of being maintained or
comprehended or manipulated by one human being. This sense is generalized
from microcomputer, and is esp. used in contrast with macro- (the
corresponding Greek prefix meaning ‘large’).
4. Local as opposed to global (or macro-). Thus a hacker might say that
buying a smaller car to reduce pollution only solves a microproblem; the
macroproblem of getting to work might be better solved by using mass
transit, moving to within walking distance, or (best of all) telecommuting.
|
| | podobné slovo | definícia |
micronesia
(mass) | Micronesia
- Mikronézia |
microphone
(mass) | microphone
- mikrofón |
microwave
(mass) | microwave
- mikrovlnný, mikrovlnka |
micro-cook
(encz) | micro-cook, v: |
micro-economics
(encz) | micro-economics,mikroekonomie [eko.] RNDr. Pavel Piskač |
micro-organism
(encz) | micro-organism,mikroorganizmus n: Zdeněk Brož |
Axis of a microscope
(gcide) | Axis \Ax"is\, n.; pl. Axes. [L. axis axis, axle. See Axle.]
A straight line, real or imaginary, passing through a body,
on which it revolves, or may be supposed to revolve; a line
passing through a body or system around which the parts are
symmetrically arranged.
[1913 Webster]
2. (Math.) A straight line with respect to which the
different parts of a magnitude are symmetrically arranged;
as, the axis of a cylinder, i. e., the axis of a cone,
that is, the straight line joining the vertex and the
center of the base; the axis of a circle, any straight
line passing through the center.
[1913 Webster]
3. (Bot.) The stem; the central part, or longitudinal
support, on which organs or parts are arranged; the
central line of any body. --Gray.
[1913 Webster]
4. (Anat.)
(a) The second vertebra of the neck, or {vertebra
dentata}.
(b) Also used of the body only of the vertebra, which is
prolonged anteriorly within the foramen of the first
vertebra or atlas, so as to form the odontoid process
or peg which serves as a pivot for the atlas and head
to turn upon.
[1913 Webster]
5. (Crystallog.) One of several imaginary lines, assumed in
describing the position of the planes by which a crystal
is bounded.
[1913 Webster]
6. (Fine Arts) The primary or secondary central line of any
design.
[1913 Webster]
Anticlinal axis (Geol.), a line or ridge from which the
strata slope downward on the two opposite sides.
Synclinal axis, a line from which the strata slope upward
in opposite directions, so as to form a valley.
Axis cylinder (Anat.), the neuraxis or essential, central
substance of a nerve fiber; -- called also axis band,
axial fiber, and cylinder axis.
Axis in peritrochio, the wheel and axle, one of the
mechanical powers.
Axis of a curve (Geom.), a straight line which bisects a
system of parallel chords of a curve; called a {principal
axis}, when cutting them at right angles, in which case it
divides the curve into two symmetrical portions, as in the
parabola, which has one such axis, the ellipse, which has
two, or the circle, which has an infinite number. The two
axes of the ellipse are the major axis and the {minor
axis}, and the two axes of the hyperbola are the
transverse axis and the conjugate axis.
Axis of a lens, the straight line passing through its
center and perpendicular to its surfaces.
Axis of a microscope or Axis of a telescope, the straight
line with which coincide the axes of the several lenses
which compose it.
Axes of co["o]rdinates in a plane, two straight lines
intersecting each other, to which points are referred for
the purpose of determining their relative position: they
are either rectangular or oblique.
Axes of co["o]rdinates in space, the three straight lines
in which the co["o]rdinate planes intersect each other.
Axis of a balance, that line about which it turns.
Axis of oscillation, of a pendulum, a right line passing
through the center about which it vibrates, and
perpendicular to the plane of vibration.
Axis of polarization, the central line around which the
prismatic rings or curves are arranged. --Brewster.
Axis of revolution (Descriptive Geom.), a straight line
about which some line or plane is revolved, so that the
several points of the line or plane shall describe circles
with their centers in the fixed line, and their planes
perpendicular to it, the line describing a surface of
revolution, and the plane a solid of revolution.
Axis of symmetry (Geom.), any line in a plane figure which
divides the figure into two such parts that one part, when
folded over along the axis, shall coincide with the other
part.
Axis of the equator, ecliptic, horizon (or other circle
considered with reference to the sphere on which it lies),
the diameter of the sphere which is perpendicular to the
plane of the circle. --Hutton.
Axis of the Ionic capital (Arch.), a line passing
perpendicularly through the middle of the eye of the
volute.
Neutral axis (Mech.), the line of demarcation between the
horizontal elastic forces of tension and compression,
exerted by the fibers in any cross section of a girder.
Optic axis of a crystal, the direction in which a ray of
transmitted light suffers no double refraction. All
crystals, not of the isometric system, are either uniaxial
or biaxial.
Optic axis, Visual axis (Opt.), the straight line passing
through the center of the pupil, and perpendicular to the
surface of the eye.
Radical axis of two circles (Geom.), the straight line
perpendicular to the line joining their centers and such
that the tangents from any point of it to the two circles
shall be equal to each other.
Spiral axis (Arch.), the axis of a twisted column drawn
spirally in order to trace the circumvolutions without.
Axis of abscissas and Axis of ordinates. See Abscissa.
[1913 Webster] |
Bifilar micrometer
(gcide) | Micrometer \Mi*crom"e*ter\, n. [Micro- + -meter: cf. F.
microm[`e]tre.]
An instrument, used with a telescope or microscope, for
measuring minute distances, or the apparent diameters of
objects which subtend minute angles. The measurement given
directly is that of the image of the object formed at the
focus of the object glass.
[1913 Webster]
Circular micrometer, or Ring micrometer, a metallic ring
fixed in the focus of the object glass of a telescope, and
used to determine differences of right ascension and
declination between stars by observations of the times at
which the stars cross the inner or outer periphery of the
ring.
Double image micrometer, a micrometer in which two images
of an object are formed in the field, usually by the two
halves of a bisected lens which are movable along their
line of section by a screw, and distances are determined
by the number of screw revolutions necessary to bring the
points to be measured into optical coincidence. When the
two images are formed by a bisected object glass, it is
called a divided-object-glass micrometer, and when the
instrument is large and equatorially mounted, it is known
as a heliometer.
Double refraction micrometer, a species of double image
micrometer, in which the two images are formed by the
double refraction of rock crystal.
Filar micrometer, or Bifilar micrometer. See under
Bifilar.
Micrometer caliper or Micrometer gauge (Mech.), a caliper
or gauge with a micrometer screw, for measuring dimensions
with great accuracy.
Micrometer head, the head of a micrometer screw.
Micrometer microscope, a compound microscope combined with
a filar micrometer, used chiefly for reading and
subdividing the divisions of large astronomical and
geodetical instruments.
Micrometer screw, a screw with a graduated head used in
some forms of micrometers; turning the head one full
revolution advances the position of the tip of the screw
only by a little.
Position micrometer. See under Position.
Scale micrometer, or Linear micrometer, a minute and very
delicately graduated scale of equal parts used in the
field of a telescope or microscope, for measuring
distances by direct comparison.
[1913 Webster] MicrometricBifilar \Bi*fi"lar\, a. [Pref. bi- + filar.]
Two-threaded; involving the use of two threads; as, bifilar
suspension; a bifilar balance.
[1913 Webster]
Bifilar micrometer (often called a bifilar), an
instrument form measuring minute distances or angles by
means of two very minute threads (usually spider lines),
one of which, at least, is movable; -- more commonly
called a filar micrometer.
[1913 Webster] |
Circular micrometer
(gcide) | Micrometer \Mi*crom"e*ter\, n. [Micro- + -meter: cf. F.
microm[`e]tre.]
An instrument, used with a telescope or microscope, for
measuring minute distances, or the apparent diameters of
objects which subtend minute angles. The measurement given
directly is that of the image of the object formed at the
focus of the object glass.
[1913 Webster]
Circular micrometer, or Ring micrometer, a metallic ring
fixed in the focus of the object glass of a telescope, and
used to determine differences of right ascension and
declination between stars by observations of the times at
which the stars cross the inner or outer periphery of the
ring.
Double image micrometer, a micrometer in which two images
of an object are formed in the field, usually by the two
halves of a bisected lens which are movable along their
line of section by a screw, and distances are determined
by the number of screw revolutions necessary to bring the
points to be measured into optical coincidence. When the
two images are formed by a bisected object glass, it is
called a divided-object-glass micrometer, and when the
instrument is large and equatorially mounted, it is known
as a heliometer.
Double refraction micrometer, a species of double image
micrometer, in which the two images are formed by the
double refraction of rock crystal.
Filar micrometer, or Bifilar micrometer. See under
Bifilar.
Micrometer caliper or Micrometer gauge (Mech.), a caliper
or gauge with a micrometer screw, for measuring dimensions
with great accuracy.
Micrometer head, the head of a micrometer screw.
Micrometer microscope, a compound microscope combined with
a filar micrometer, used chiefly for reading and
subdividing the divisions of large astronomical and
geodetical instruments.
Micrometer screw, a screw with a graduated head used in
some forms of micrometers; turning the head one full
revolution advances the position of the tip of the screw
only by a little.
Position micrometer. See under Position.
Scale micrometer, or Linear micrometer, a minute and very
delicately graduated scale of equal parts used in the
field of a telescope or microscope, for measuring
distances by direct comparison.
[1913 Webster] Micrometric |
Cobweb micrometer
(gcide) | Cobweb \Cob"web`\, n. [Cob a spider + web.]
1. The network spread by a spider to catch its prey.
[1913 Webster]
2. A snare of insidious meshes designed to catch the ignorant
and unwary.
[1913 Webster]
I can not but lament thy splendid wit
Entangled in the cobwebs of the schools. --Cowper.
[1913 Webster]
3. That which is thin and unsubstantial, or flimsy and
worthless; rubbish.
[1913 Webster]
The dust and cobwebs of that uncivil age. --Sir P.
Sidney.
[1913 Webster]
4. (Zool.) The European spotted flycatcher.
[1913 Webster]
Cobweb lawn, a fine linen, mentioned in 1640 as being in
pieces of fifteen yards. --Beck. Draper's Dict.
[1913 Webster]
Such a proud piece of cobweb lawn. --Beau. & Fl.
Cobweb micrometer, a micrometer in which threads of cobweb
are substituted for wires.
[1913 Webster] |
Compound microscope
(gcide) | Compound \Com"pound\, a. [OE. compouned, p. p. of compounen. See
Compound, v. t.]
Composed of two or more elements, ingredients, parts;
produced by the union of several ingredients, parts, or
things; composite; as, a compound word.
[1913 Webster]
Compound substances are made up of two or more simple
substances. --I. Watts.
[1913 Webster]
Compound addition, subtraction, multiplication,
division (Arith.), the addition, subtraction, etc., of
compound numbers.
Compound crystal (Crystallog.), a twin crystal, or one
seeming to be made up of two or more crystals combined
according to regular laws of composition.
Compound engine (Mech.), a form of steam engine in which
the steam that has been used in a high-pressure cylinder
is made to do further service in a larger low-pressure
cylinder, sometimes in several larger cylinders,
successively.
Compound ether. (Chem.) See under Ether.
Compound flower (Bot.), a flower head resembling a single
flower, but really composed of several florets inclosed in
a common calyxlike involucre, as the sunflower or
dandelion.
Compound fraction. (Math.) See Fraction.
Compound fracture. See Fracture.
Compound householder, a householder who compounds or
arranges with his landlord that his rates shall be
included in his rents. [Eng.]
Compound interest. See Interest.
Compound larceny. (Law) See Larceny.
Compound leaf (Bot.), a leaf having two or more separate
blades or leaflets on a common leafstalk.
Compound microscope. See Microscope.
Compound motion. See Motion.
Compound number (Math.), one constructed according to a
varying scale of denomination; as, 3 cwt., 1 qr., 5 lb.;
-- called also denominate number.
Compound pier (Arch.), a clustered column.
Compound quantity (Alg.), a quantity composed of two or
more simple quantities or terms, connected by the sign +
(plus) or - (minus). Thus, a + b - c, and bb - b, are
compound quantities.
Compound radical. (Chem.) See Radical.
Compound ratio (Math.), the product of two or more ratios;
thus ab:cd is a ratio compounded of the simple ratios a:c
and b:d.
Compound rest (Mech.), the tool carriage of an engine
lathe.
Compound screw (Mech.), a screw having on the same axis two
or more screws with different pitch (a differential
screw), or running in different directions (a right and
left screw).
Compound time (Mus.), that in which two or more simple
measures are combined in one; as, 6-8 time is the joining
of two measures of 3-8 time.
Compound word, a word composed of two or more words;
specifically, two or more words joined together by a
hyphen.
[1913 Webster]Microscope \Mi"cro*scope\, n. [Micro- + -scope.]
An optical instrument, consisting of a lens, or combination
of lenses, for making an enlarged image of an object which is
too minute to be viewed by the naked eye.
[1913 Webster]
Compound microscope, an instrument consisting of a
combination of lenses such that the image formed by the
lens or set of lenses nearest the object (called the
objective) is magnified by another lens called the ocular
or eyepiece.
Oxyhydrogen microscope, and Solar microscope. See under
Oxyhydrogen, and Solar.
Simple microscope, or Single microscope, a single convex
lens used to magnify objects placed in its focus.
[1913 Webster] |
Double image micrometer
(gcide) | Micrometer \Mi*crom"e*ter\, n. [Micro- + -meter: cf. F.
microm[`e]tre.]
An instrument, used with a telescope or microscope, for
measuring minute distances, or the apparent diameters of
objects which subtend minute angles. The measurement given
directly is that of the image of the object formed at the
focus of the object glass.
[1913 Webster]
Circular micrometer, or Ring micrometer, a metallic ring
fixed in the focus of the object glass of a telescope, and
used to determine differences of right ascension and
declination between stars by observations of the times at
which the stars cross the inner or outer periphery of the
ring.
Double image micrometer, a micrometer in which two images
of an object are formed in the field, usually by the two
halves of a bisected lens which are movable along their
line of section by a screw, and distances are determined
by the number of screw revolutions necessary to bring the
points to be measured into optical coincidence. When the
two images are formed by a bisected object glass, it is
called a divided-object-glass micrometer, and when the
instrument is large and equatorially mounted, it is known
as a heliometer.
Double refraction micrometer, a species of double image
micrometer, in which the two images are formed by the
double refraction of rock crystal.
Filar micrometer, or Bifilar micrometer. See under
Bifilar.
Micrometer caliper or Micrometer gauge (Mech.), a caliper
or gauge with a micrometer screw, for measuring dimensions
with great accuracy.
Micrometer head, the head of a micrometer screw.
Micrometer microscope, a compound microscope combined with
a filar micrometer, used chiefly for reading and
subdividing the divisions of large astronomical and
geodetical instruments.
Micrometer screw, a screw with a graduated head used in
some forms of micrometers; turning the head one full
revolution advances the position of the tip of the screw
only by a little.
Position micrometer. See under Position.
Scale micrometer, or Linear micrometer, a minute and very
delicately graduated scale of equal parts used in the
field of a telescope or microscope, for measuring
distances by direct comparison.
[1913 Webster] Micrometric |
Double refraction micrometer
(gcide) | Micrometer \Mi*crom"e*ter\, n. [Micro- + -meter: cf. F.
microm[`e]tre.]
An instrument, used with a telescope or microscope, for
measuring minute distances, or the apparent diameters of
objects which subtend minute angles. The measurement given
directly is that of the image of the object formed at the
focus of the object glass.
[1913 Webster]
Circular micrometer, or Ring micrometer, a metallic ring
fixed in the focus of the object glass of a telescope, and
used to determine differences of right ascension and
declination between stars by observations of the times at
which the stars cross the inner or outer periphery of the
ring.
Double image micrometer, a micrometer in which two images
of an object are formed in the field, usually by the two
halves of a bisected lens which are movable along their
line of section by a screw, and distances are determined
by the number of screw revolutions necessary to bring the
points to be measured into optical coincidence. When the
two images are formed by a bisected object glass, it is
called a divided-object-glass micrometer, and when the
instrument is large and equatorially mounted, it is known
as a heliometer.
Double refraction micrometer, a species of double image
micrometer, in which the two images are formed by the
double refraction of rock crystal.
Filar micrometer, or Bifilar micrometer. See under
Bifilar.
Micrometer caliper or Micrometer gauge (Mech.), a caliper
or gauge with a micrometer screw, for measuring dimensions
with great accuracy.
Micrometer head, the head of a micrometer screw.
Micrometer microscope, a compound microscope combined with
a filar micrometer, used chiefly for reading and
subdividing the divisions of large astronomical and
geodetical instruments.
Micrometer screw, a screw with a graduated head used in
some forms of micrometers; turning the head one full
revolution advances the position of the tip of the screw
only by a little.
Position micrometer. See under Position.
Scale micrometer, or Linear micrometer, a minute and very
delicately graduated scale of equal parts used in the
field of a telescope or microscope, for measuring
distances by direct comparison.
[1913 Webster] Micrometric |
Filar micrometer
(gcide) | Micrometer \Mi*crom"e*ter\, n. [Micro- + -meter: cf. F.
microm[`e]tre.]
An instrument, used with a telescope or microscope, for
measuring minute distances, or the apparent diameters of
objects which subtend minute angles. The measurement given
directly is that of the image of the object formed at the
focus of the object glass.
[1913 Webster]
Circular micrometer, or Ring micrometer, a metallic ring
fixed in the focus of the object glass of a telescope, and
used to determine differences of right ascension and
declination between stars by observations of the times at
which the stars cross the inner or outer periphery of the
ring.
Double image micrometer, a micrometer in which two images
of an object are formed in the field, usually by the two
halves of a bisected lens which are movable along their
line of section by a screw, and distances are determined
by the number of screw revolutions necessary to bring the
points to be measured into optical coincidence. When the
two images are formed by a bisected object glass, it is
called a divided-object-glass micrometer, and when the
instrument is large and equatorially mounted, it is known
as a heliometer.
Double refraction micrometer, a species of double image
micrometer, in which the two images are formed by the
double refraction of rock crystal.
Filar micrometer, or Bifilar micrometer. See under
Bifilar.
Micrometer caliper or Micrometer gauge (Mech.), a caliper
or gauge with a micrometer screw, for measuring dimensions
with great accuracy.
Micrometer head, the head of a micrometer screw.
Micrometer microscope, a compound microscope combined with
a filar micrometer, used chiefly for reading and
subdividing the divisions of large astronomical and
geodetical instruments.
Micrometer screw, a screw with a graduated head used in
some forms of micrometers; turning the head one full
revolution advances the position of the tip of the screw
only by a little.
Position micrometer. See under Position.
Scale micrometer, or Linear micrometer, a minute and very
delicately graduated scale of equal parts used in the
field of a telescope or microscope, for measuring
distances by direct comparison.
[1913 Webster] MicrometricBifilar \Bi*fi"lar\, a. [Pref. bi- + filar.]
Two-threaded; involving the use of two threads; as, bifilar
suspension; a bifilar balance.
[1913 Webster]
Bifilar micrometer (often called a bifilar), an
instrument form measuring minute distances or angles by
means of two very minute threads (usually spider lines),
one of which, at least, is movable; -- more commonly
called a filar micrometer.
[1913 Webster] |
filar micrometer
(gcide) | Micrometer \Mi*crom"e*ter\, n. [Micro- + -meter: cf. F.
microm[`e]tre.]
An instrument, used with a telescope or microscope, for
measuring minute distances, or the apparent diameters of
objects which subtend minute angles. The measurement given
directly is that of the image of the object formed at the
focus of the object glass.
[1913 Webster]
Circular micrometer, or Ring micrometer, a metallic ring
fixed in the focus of the object glass of a telescope, and
used to determine differences of right ascension and
declination between stars by observations of the times at
which the stars cross the inner or outer periphery of the
ring.
Double image micrometer, a micrometer in which two images
of an object are formed in the field, usually by the two
halves of a bisected lens which are movable along their
line of section by a screw, and distances are determined
by the number of screw revolutions necessary to bring the
points to be measured into optical coincidence. When the
two images are formed by a bisected object glass, it is
called a divided-object-glass micrometer, and when the
instrument is large and equatorially mounted, it is known
as a heliometer.
Double refraction micrometer, a species of double image
micrometer, in which the two images are formed by the
double refraction of rock crystal.
Filar micrometer, or Bifilar micrometer. See under
Bifilar.
Micrometer caliper or Micrometer gauge (Mech.), a caliper
or gauge with a micrometer screw, for measuring dimensions
with great accuracy.
Micrometer head, the head of a micrometer screw.
Micrometer microscope, a compound microscope combined with
a filar micrometer, used chiefly for reading and
subdividing the divisions of large astronomical and
geodetical instruments.
Micrometer screw, a screw with a graduated head used in
some forms of micrometers; turning the head one full
revolution advances the position of the tip of the screw
only by a little.
Position micrometer. See under Position.
Scale micrometer, or Linear micrometer, a minute and very
delicately graduated scale of equal parts used in the
field of a telescope or microscope, for measuring
distances by direct comparison.
[1913 Webster] MicrometricBifilar \Bi*fi"lar\, a. [Pref. bi- + filar.]
Two-threaded; involving the use of two threads; as, bifilar
suspension; a bifilar balance.
[1913 Webster]
Bifilar micrometer (often called a bifilar), an
instrument form measuring minute distances or angles by
means of two very minute threads (usually spider lines),
one of which, at least, is movable; -- more commonly
called a filar micrometer.
[1913 Webster] |
lavaliere microphone
(gcide) | lavaliere microphone \la`va`liere" mic"ro*phone\ n.
A small microphone worn around the neck on a supporting
string or chain.
[PJC] |
Linear micrometer
(gcide) | Micrometer \Mi*crom"e*ter\, n. [Micro- + -meter: cf. F.
microm[`e]tre.]
An instrument, used with a telescope or microscope, for
measuring minute distances, or the apparent diameters of
objects which subtend minute angles. The measurement given
directly is that of the image of the object formed at the
focus of the object glass.
[1913 Webster]
Circular micrometer, or Ring micrometer, a metallic ring
fixed in the focus of the object glass of a telescope, and
used to determine differences of right ascension and
declination between stars by observations of the times at
which the stars cross the inner or outer periphery of the
ring.
Double image micrometer, a micrometer in which two images
of an object are formed in the field, usually by the two
halves of a bisected lens which are movable along their
line of section by a screw, and distances are determined
by the number of screw revolutions necessary to bring the
points to be measured into optical coincidence. When the
two images are formed by a bisected object glass, it is
called a divided-object-glass micrometer, and when the
instrument is large and equatorially mounted, it is known
as a heliometer.
Double refraction micrometer, a species of double image
micrometer, in which the two images are formed by the
double refraction of rock crystal.
Filar micrometer, or Bifilar micrometer. See under
Bifilar.
Micrometer caliper or Micrometer gauge (Mech.), a caliper
or gauge with a micrometer screw, for measuring dimensions
with great accuracy.
Micrometer head, the head of a micrometer screw.
Micrometer microscope, a compound microscope combined with
a filar micrometer, used chiefly for reading and
subdividing the divisions of large astronomical and
geodetical instruments.
Micrometer screw, a screw with a graduated head used in
some forms of micrometers; turning the head one full
revolution advances the position of the tip of the screw
only by a little.
Position micrometer. See under Position.
Scale micrometer, or Linear micrometer, a minute and very
delicately graduated scale of equal parts used in the
field of a telescope or microscope, for measuring
distances by direct comparison.
[1913 Webster] Micrometric |
Lucernal microscope
(gcide) | Lucernal \Lu*cer"nal\, a. [L. lucerna a lamp.]
Of or pertaining to a lamp.
[1913 Webster]
Lucernal microscope, a form of the microscope in which the
object is illuminated by means of a lamp, and its image is
thrown upon a plate of ground glass connected with the
instrument, or on a screen independent of it.
[1913 Webster] |
Microampere
(gcide) | Microampere \Mi`cro*am`p[`e]re"\, n. [Micr- + amp[`e]re.]
(Elec.)
One of the smaller measures of electrical currents; the
millionth part of one amp[`e]re.
[1913 Webster] |
Microanalysis
(gcide) | Microanalysis \Mi`cro*a*nal"y*sis\, n. [Micro- + analysis.]
1. Analysis of the structure of materials from careful
observation of photomicrographs.
[Webster 1913 Suppl.]
2. (Chem.) Chemical analysis of very small quantities of
substances, requiring special apparatus to handle and
weigh small amounts of materials.
[PJC] |
Microbacteria
(gcide) | Microbacteria \Mi`cro*bac*te"ri*a\, n. pl. [NL. See Micro-,
and Bacterium.] (Biol.)
In the classification of Cohn, one of the four tribes of
Bacteria.
[1913 Webster]
Note: In this classification bacteria are divided into four
tribes: 1. Spherobacteria, or spherical bacteria, as
the genus Micrococcus. 2. Microbacteria, or
bacteria in the form of short rods, including the genus
Bacterium. 3. Desmobacteria, or bacteria in
straight filaments, of which the genus Bacillus is a
type. 4. Spirobacteria, or bacteria in spiral
filaments, as the genus Vibrio.
[1913 Webster] |
Microbarograph
(gcide) | Microbarograph \Mi`cro*bar"o*graph\, n. [Micro- + barograph.]
An instrument for recording minor fluctuations of atmospheric
pressure, as opposed to general barometric surges.
[Webster 1913 Suppl.] Microbe |
Microbe
(gcide) | Microbe \Mi"crobe\, Microbion \Mi*cro"bi*on\, n. [NL. microbion,
fr. Gr. ? little + ? life.] (Biol.)
A microscopic organism; a microorganism; -- particularly
applied to bacteria and especially to pathogenic forms; as,
the microbe of fowl cholera.
[1913 Webster] microbial |
microbial
(gcide) | microbial \mi*cro"bi*al\, microbian \mi*cro"bi*an\, a. (Biol.)
Of, pertaining to, or caused by, microbes; as, microbial
growth; the microbian theory; a microbian disease.
[1913 Webster +PJC] |
microbian
(gcide) | microbial \mi*cro"bi*al\, microbian \mi*cro"bi*an\, a. (Biol.)
Of, pertaining to, or caused by, microbes; as, microbial
growth; the microbian theory; a microbian disease.
[1913 Webster +PJC] |
Microbic
(gcide) | Microbic \Mi*crob"ic\, a. (Biol.)
Of or pertaining to a microbe.
[1913 Webster] |
Microbicide
(gcide) | Microbicide \Mi*crob"i*cide\, n. [Microbe + L. caedere to kill.]
(Biol.)
Any agent detrimental to, or destructive of, the life of
microbes or bacterial organisms.
[1913 Webster] |
Microbiological
(gcide) | Microbiology \Mi`cro*bi*ol"o*gy\, n. [See Microbe; -logy.]
The branch of biology studying minute organisms, or microbes,
such as the bacteria, fungi, viruses, and protozoa. --
Mi`cro*bi`o*log"ic*al, a. -- Mi`cro*bi*ol"o*gist, n.
[Webster 1913 Suppl. +PJC] Microcephalic |
Microbiologist
(gcide) | Microbiology \Mi`cro*bi*ol"o*gy\, n. [See Microbe; -logy.]
The branch of biology studying minute organisms, or microbes,
such as the bacteria, fungi, viruses, and protozoa. --
Mi`cro*bi`o*log"ic*al, a. -- Mi`cro*bi*ol"o*gist, n.
[Webster 1913 Suppl. +PJC] Microcephalic |
Microbiology
(gcide) | Microbiology \Mi`cro*bi*ol"o*gy\, n. [See Microbe; -logy.]
The branch of biology studying minute organisms, or microbes,
such as the bacteria, fungi, viruses, and protozoa. --
Mi`cro*bi`o*log"ic*al, a. -- Mi`cro*bi*ol"o*gist, n.
[Webster 1913 Suppl. +PJC] Microcephalic |
Microbion
(gcide) | Microbe \Mi"crobe\, Microbion \Mi*cro"bi*on\, n. [NL. microbion,
fr. Gr. ? little + ? life.] (Biol.)
A microscopic organism; a microorganism; -- particularly
applied to bacteria and especially to pathogenic forms; as,
the microbe of fowl cholera.
[1913 Webster] microbial |
Microcephalic
(gcide) | Microcephalic \Mi`cro*ce*phal"ic\, Microcephalous
\Mi`cro*ceph"a*lous\, a. [Micro- + cephalic, cephalous.] (Anat.)
Having a small head; having the cranial cavity small; --
opposed to megacephalic.
[1913 Webster] microchemical |
Microcephalous
(gcide) | Microcephalic \Mi`cro*ce*phal"ic\, Microcephalous
\Mi`cro*ceph"a*lous\, a. [Micro- + cephalic, cephalous.] (Anat.)
Having a small head; having the cranial cavity small; --
opposed to megacephalic.
[1913 Webster] microchemical |
Microchaera albocoronata
(gcide) | Snowcap \Snow"cap`\, n. (Zool.)
A very small humming bird (Microchaera albocoronata) native
of New Grenada.
[1913 Webster]
Note: The feathers of the top of the head are white and
snining, the body blue black with a purple and bronzy
luster. The name is applied also to {Microchaera
parvirostris} of Central America, which is similar in
color.
[1913 Webster] |
Microchaera parvirostris
(gcide) | Snowcap \Snow"cap`\, n. (Zool.)
A very small humming bird (Microchaera albocoronata) native
of New Grenada.
[1913 Webster]
Note: The feathers of the top of the head are white and
snining, the body blue black with a purple and bronzy
luster. The name is applied also to {Microchaera
parvirostris} of Central America, which is similar in
color.
[1913 Webster] |
micro-chemical
(gcide) | microchemical \mi`cro*chem"ic*al\, micro-chemical
\mi`cro-chem"ic*al\, a.
Of or pertaining to microchemistry; as, a micro-chemical
test.
[1913 Webster] microchemistry |
microchemical
(gcide) | microchemical \mi`cro*chem"ic*al\, micro-chemical
\mi`cro-chem"ic*al\, a.
Of or pertaining to microchemistry; as, a micro-chemical
test.
[1913 Webster] microchemistry |
micro-chemistry
(gcide) | microchemistry \mi`cro*chem"is*try\, micro-chemistry
\mi`cro-chem"is*try\, n. [Micro- + chemistry.]
The application of chemical tests to minute objects or
portions of matter, usually assisted by sensitive
instruments; -- distinguished from macro-chemistry.
[1913 Webster] |
microchemistry
(gcide) | microchemistry \mi`cro*chem"is*try\, micro-chemistry
\mi`cro-chem"is*try\, n. [Micro- + chemistry.]
The application of chemical tests to minute objects or
portions of matter, usually assisted by sensitive
instruments; -- distinguished from macro-chemistry.
[1913 Webster] |
Microchronometer
(gcide) | Microchronometer \Mi`cro*chro*nom"e*ter\, n.
A chronoscope.
[1913 Webster] |
Microciona prolifera
(gcide) | Red \Red\, a. [Compar. Redder (-d?r); superl. Reddest.] [OE.
red, reed, AS. re['a]d, re['o]d; akin to OS. r[=o]d, OFries.
r[=a]d, D. rood, G. roht, rot, OHG. r[=o]t, Dan. & Sw.
r["o]d, Icel. rau[eth]r, rj[=o][eth]r, Goth. r['a]uds, W.
rhudd, Armor. ruz, Ir. & Gael. ruadh, L. ruber, rufus, Gr.
'eryqro`s, Skr. rudhira, rohita; cf. L. rutilus. [root]113.
Cf. Erysipelas, Rouge, Rubric, Ruby, Ruddy,
Russet, Rust.]
Of the color of blood, or of a tint resembling that color; of
the hue of that part of the rainbow, or of the solar
spectrum, which is furthest from the violet part. "Fresh
flowers, white and reede." --Chaucer.
[1913 Webster]
Your color, I warrant you, is as red as any rose.
--Shak.
[1913 Webster]
Note: Red is a general term, including many different shades
or hues, as scarlet, crimson, vermilion, orange red,
and the like.
[1913 Webster]
Note: Red is often used in the formation of self-explaining
compounds; as, red-breasted, red-cheeked, red-faced,
red-haired, red-headed, red-skinned, red-tailed,
red-topped, red-whiskered, red-coasted.
[1913 Webster]
Red admiral (Zool.), a beautiful butterfly ({Vanessa
Atalanta}) common in both Europe and America. The front
wings are crossed by a broad orange red band. The larva
feeds on nettles. Called also Atalanta butterfly, and
nettle butterfly.
Red ant. (Zool.)
(a) A very small ant (Myrmica molesta) which often infests
houses.
(b) A larger reddish ant (Formica sanguinea), native of
Europe and America. It is one of the slave-making
species.
Red antimony (Min.), kermesite. See Kermes mineral
(b), under Kermes.
Red ash (Bot.), an American tree (Fraxinus pubescens),
smaller than the white ash, and less valuable for timber.
--Cray.
Red bass. (Zool.) See Redfish
(d) .
Red bay (Bot.), a tree (Persea Caroliniensis) having the
heartwood red, found in swamps in the Southern United
States.
Red beard (Zool.), a bright red sponge ({Microciona
prolifera}), common on oyster shells and stones. [Local,
U.S.]
Red birch (Bot.), a species of birch (Betula nigra)
having reddish brown bark, and compact, light-colored
wood. --Gray.
Red blindness. (Med.) See Daltonism.
Red book, a book containing the names of all the persons in
the service of the state. [Eng.]
Red book of the Exchequer, an ancient record in which are
registered the names of all that held lands per baroniam
in the time of Henry II. --Brande & C.
Red brass, an alloy containing eight parts of copper and
three of zinc.
Red bug. (Zool.)
(a) A very small mite which in Florida attacks man, and
produces great irritation by its bites.
(b) A red hemipterous insect of the genus Pyrrhocoris,
especially the European species (Pyrrhocoris apterus),
which is bright scarlet and lives in clusters on tree
trunks.
(c) See Cotton stainder, under Cotton.
Red cedar. (Bot.) An evergreen North American tree
(Juniperus Virginiana) having a fragrant red-colored
heartwood.
(b) A tree of India and Australia (Cedrela Toona) having
fragrant reddish wood; -- called also toon tree in
India.
Red horse. (Zool.)
(a) Any large American red fresh-water sucker, especially
Moxostoma macrolepidotum and allied species.
(b) See the Note under Drumfish.
Red lead.
(Chem) See under Lead, and Minium.
Red-lead ore. (Min.) Same as Crocoite.
Red liquor (Dyeing), a solution consisting essentially of
aluminium acetate, used as a mordant in the fixation of
dyestuffs on vegetable fiber; -- so called because used
originally for red dyestuffs. Called also red mordant.
Red maggot (Zool.), the larva of the wheat midge.
Red manganese. (Min.) Same as Rhodochrosite.
Red man, one of the American Indians; -- so called from his
color.
Red maple (Bot.), a species of maple (Acer rubrum). See
Maple.
Red mite. (Zool.) See Red spider, below.
Red mulberry (Bot.), an American mulberry of a dark purple
color (Morus rubra).
Red mullet (Zool.), the surmullet. See Mullet.
Red ocher (Min.), a soft earthy variety of hematite, of a
reddish color.
Red perch (Zool.), the rosefish.
Red phosphorus. (Chem.) See under Phosphorus.
Red pine (Bot.), an American species of pine ({Pinus
resinosa}); -- so named from its reddish bark.
Red precipitate. See under Precipitate.
Red Republican (European Politics), originally, one who
maintained extreme republican doctrines in France, --
because a red liberty cap was the badge of the party; an
extreme radical in social reform. [Cant]
Red ribbon, the ribbon of the Order of the Bath in England.
Red sanders. (Bot.) See Sanders.
Red sandstone. (Geol.) See under Sandstone.
Red scale (Zool.), a scale insect (Aspidiotus aurantii)
very injurious to the orange tree in California and
Australia.
Red silver (Min.), an ore of silver, of a ruby-red or
reddish black color. It includes proustite, or light red
silver, and pyrargyrite, or dark red silver.
Red snapper (Zool.), a large fish (Lutjanus aya syn.
Lutjanus Blackfordii) abundant in the Gulf of Mexico and
about the Florida reefs.
Red snow, snow colored by a mocroscopic unicellular alga
(Protococcus nivalis) which produces large patches of
scarlet on the snows of arctic or mountainous regions.
Red softening (Med.) a form of cerebral softening in which
the affected parts are red, -- a condition due either to
infarction or inflammation.
Red spider (Zool.), a very small web-spinning mite
(Tetranychus telarius) which infests, and often
destroys, plants of various kinds, especially those
cultivated in houses and conservatories. It feeds mostly
on the under side of the leaves, and causes them to turn
yellow and die. The adult insects are usually pale red.
Called also red mite.
Red squirrel (Zool.), the chickaree.
Red tape,
(a) the tape used in public offices for tying up documents,
etc. Hence,
(b) official formality and delay; excessive bureaucratic
paperwork.
Red underwing (Zool.), any species of noctuid moths
belonging to Catacola and allied genera. The numerous
species are mostly large and handsomely colored. The under
wings are commonly banded with bright red or orange.
Red water, a disease in cattle, so called from an
appearance like blood in the urine.
[1913 Webster] |
Microcline
(gcide) | Microcline \Mi"cro*cline\, n. [Micro- + Gr. ? to incline.]
(Min.)
A mineral of the feldspar group, like orthoclase or common
feldspar in composition, but triclinic in form.
[1913 Webster] |
Micrococcal
(gcide) | Micrococcal \Mi`cro*coc"cal\, a.
Of or pertaining to micrococci; caused by micrococci.
--Nature.
[1913 Webster] |
Micrococci
(gcide) | Micrococcus \Mi`cro*coc"cus\, n.; pl. Micrococci. [NL. See
Micro-, and Coccus.] (Biol.)
A genus of Spherobacteria, in the form of very small
globular or oval cells, forming, by transverse division,
filaments, or chains of cells, or in some cases single
organisms shaped like dumb-bells (Diplococcus), all without
the power of motion. See Illust. of Ascoccus.
[1913 Webster]
Note: Physiologically, micrococci are divided into three
groups; chromogenic, characterized by their power of
forming pigment; zymogenic, including those associated
with definite chemical processes; and pathogenic, those
connected with disease.
[1913 Webster] |
Micrococcus
(gcide) | Micrococcus \Mi`cro*coc"cus\, n.; pl. Micrococci. [NL. See
Micro-, and Coccus.] (Biol.)
A genus of Spherobacteria, in the form of very small
globular or oval cells, forming, by transverse division,
filaments, or chains of cells, or in some cases single
organisms shaped like dumb-bells (Diplococcus), all without
the power of motion. See Illust. of Ascoccus.
[1913 Webster]
Note: Physiologically, micrococci are divided into three
groups; chromogenic, characterized by their power of
forming pigment; zymogenic, including those associated
with definite chemical processes; and pathogenic, those
connected with disease.
[1913 Webster] |
Micrococcus ureae
(gcide) | Urea \U"re*a\, a. [NL. See Urine.] (Physiol. Chem.)
A very soluble crystalline body which is the chief
constituent of the urine in mammals and some other animals.
It is also present in small quantity in blood, serous fluids,
lymph, the liver, etc.
[1913 Webster]
Note: It is the main product of the regressive metamorphosis
(katabolism) of proteid matter in the body, and is
excreted daily to the amount of about 500 grains by a
man of average weight. Chemically it is carbamide,
CO(NH2)2, and when heated with strong acids or
alkalies is decomposed into carbonic acid and ammonia.
It unites with acids to form salts, as nitrate of urea,
and it can be made synthetically from ammonium cyanate,
with which it is isomeric.
[1913 Webster]
Urea ferment, a soluble ferment formed by certain bacteria,
which, however, yield the ferment from the body of their
cells only after they have been killed by alcohol. It
causes urea to take up water and decompose into carbonic
acid and ammonia. Many different bacteria possess this
property, especially Bacterium ureae and {Micrococcus
ureae}, which are found abundantly in urines undergoing
alkaline fermentation.
[1913 Webster] |
microcomputer
(gcide) | microcomputer \microcomputer\ n.
A small computer based on a microprocessor; in practise, at
any given time in the technology of computer development, a
microcomputer will be one that is less powerful than a
minicomputer.
Syn: personal computer, PC.
[WordNet 1.5] |
Microcosm
(gcide) | Microcosm \Mi"cro*cosm\, n. [F. microcosme, L. microcosmus, fr.
Gr. mikro`s small + ko`smos the world.]
1. A little world; a miniature universe. Hence (so called by
Paracelsus), a man, as a supposed epitome of the exterior
universe or great world. Opposed to macrocosm. --Shak.
[1913 Webster]
2. A relatively small object or system considered as
representative of a larger system of which it is part,
exhibiting many features of the complete system.
[PJC] Microcosmic |
Microcosmic
(gcide) | Microcosmic \Mi`cro*cos"mic\, Microcosmical \Mi`cro*cos"mic*al\,
a. [Cf. F. microcosmique.]
Of or pertaining to the microcosm.
[1913 Webster]
Microcosmic salt (Chem.), a white crystalline substance
obtained by mixing solutions of sodium phosphate and
ammonium phosphate, and also called
hydric-sodic-ammonic-phosphate. It is a powerful flux,
and is used as a substitute for borax as a blowpipe
reagent in testing for the metallic oxides. Originally
obtained by the alchemists from human urine, and called
sal microcosmicum.
[1913 Webster] |
Microcosmic salt
(gcide) | Salt \Salt\, n. [AS. sealt; akin to OS. & OFries. salt, D. zout,
G. salz, Icel., Sw., & Dan. salt, L. sal, Gr. ?, Russ. sole,
Ir. & Gael. salann, W. halen, of unknown origin. Cf. Sal,
Salad, Salary, Saline, Sauce, Sausage.]
1. The chloride of sodium, a substance used for seasoning
food, for the preservation of meat, etc. It is found
native in the earth, and is also produced, by evaporation
and crystallization, from sea water and other water
impregnated with saline particles.
[1913 Webster]
2. Hence, flavor; taste; savor; smack; seasoning.
[1913 Webster]
Though we are justices and doctors and churchmen . .
. we have some salt of our youth in us. --Shak.
[1913 Webster]
3. Hence, also, piquancy; wit; sense; as, Attic salt.
[1913 Webster]
4. A dish for salt at table; a saltcellar.
[1913 Webster]
I out and bought some things; among others, a dozen
of silver salts. --Pepys.
[1913 Webster]
5. A sailor; -- usually qualified by old. [Colloq.]
[1913 Webster]
Around the door are generally to be seen, laughing
and gossiping, clusters of old salts. --Hawthorne.
[1913 Webster]
6. (Chem.) The neutral compound formed by the union of an
acid and a base; thus, sulphuric acid and iron form the
salt sulphate of iron or green vitriol.
[1913 Webster]
Note: Except in case of ammonium salts, accurately speaking,
it is the acid radical which unites with the base or
basic radical, with the elimination of hydrogen, of
water, or of analogous compounds as side products. In
the case of diacid and triacid bases, and of dibasic
and tribasic acids, the mutual neutralization may vary
in degree, producing respectively basic, neutral, or
acid salts. See Phrases below.
[1913 Webster]
7. Fig.: That which preserves from corruption or error; that
which purifies; a corrective; an antiseptic; also, an
allowance or deduction; as, his statements must be taken
with a grain of salt.
[1913 Webster]
Ye are the salt of the earth. --Matt. v. 13.
[1913 Webster]
8. pl. Any mineral salt used as an aperient or cathartic,
especially Epsom salts, Rochelle salt, or Glauber's salt.
[1913 Webster]
9. pl. Marshes flooded by the tide. [Prov. Eng.]
[1913 Webster]
Above the salt, Below the salt, phrases which have
survived the old custom, in the houses of people of rank,
of placing a large saltcellar near the middle of a long
table, the places above which were assigned to the guests
of distinction, and those below to dependents, inferiors,
and poor relations. See Saltfoot.
[1913 Webster]
His fashion is not to take knowledge of him that is
beneath him in clothes. He never drinks below the
salt. --B. Jonson.
[1913 Webster]
Acid salt (Chem.)
(a) A salt derived from an acid which has several
replaceable hydrogen atoms which are only partially
exchanged for metallic atoms or basic radicals; as,
acid potassium sulphate is an acid salt.
(b) A salt, whatever its constitution, which merely gives
an acid reaction; thus, copper sulphate, which is
composed of a strong acid united with a weak base, is
an acid salt in this sense, though theoretically it is
a neutral salt.
Alkaline salt (Chem.), a salt which gives an alkaline
reaction, as sodium carbonate.
Amphid salt (Old Chem.), a salt of the oxy type, formerly
regarded as composed of two oxides, an acid and a basic
oxide. [Obsolescent]
Basic salt (Chem.)
(a) A salt which contains more of the basic constituent
than is required to neutralize the acid.
(b) An alkaline salt.
Binary salt (Chem.), a salt of the oxy type conveniently
regarded as composed of two ingredients (analogously to a
haloid salt), viz., a metal and an acid radical.
Double salt (Chem.), a salt regarded as formed by the union
of two distinct salts, as common alum, potassium aluminium
sulphate. See under Double.
Epsom salts. See in the Vocabulary.
Essential salt (Old Chem.), a salt obtained by
crystallizing plant juices.
Ethereal salt. (Chem.) See under Ethereal.
Glauber's salt or Glauber's salts. See in Vocabulary.
Haloid salt (Chem.), a simple salt of a halogen acid, as
sodium chloride.
Microcosmic salt. (Chem.). See under Microcosmic.
Neutral salt. (Chem.)
(a) A salt in which the acid and base (in theory)
neutralize each other.
(b) A salt which gives a neutral reaction.
Oxy salt (Chem.), a salt derived from an oxygen acid.
Per salt (Old Chem.), a salt supposed to be derived from a
peroxide base or analogous compound. [Obs.]
Permanent salt, a salt which undergoes no change on
exposure to the air.
Proto salt (Chem.), a salt derived from a protoxide base or
analogous compound.
Rochelle salt. See under Rochelle.
Salt of amber (Old Chem.), succinic acid.
Salt of colcothar (Old Chem.), green vitriol, or sulphate
of iron.
Salt of hartshorn. (Old Chem.)
(a) Sal ammoniac, or ammonium chloride.
(b) Ammonium carbonate. Cf. Spirit of hartshorn, under
Hartshorn.
Salt of lemons. (Chem.) See Salt of sorrel, below.
Salt of Saturn (Old Chem.), sugar of lead; lead acetate; --
the alchemical name of lead being Saturn.
Salt of Seignette. Same as Rochelle salt.
Salt of soda (Old Chem.), sodium carbonate.
Salt of sorrel (Old Chem.), acid potassium oxalate, or
potassium quadroxalate, used as a solvent for ink stains;
-- so called because found in the sorrel, or Oxalis. Also
sometimes inaccurately called salt of lemon.
Salt of tartar (Old Chem.), potassium carbonate; -- so
called because formerly made by heating cream of tartar,
or potassium tartrate. [Obs.]
Salt of Venus (Old Chem.), blue vitriol; copper sulphate;
-- the alchemical name of copper being Venus.
Salt of wisdom. See Alembroth.
Sedative salt (Old Med. Chem.), boric acid.
Sesqui salt (Chem.), a salt derived from a sesquioxide base
or analogous compound.
Spirit of salt. (Chem.) See under Spirit.
Sulpho salt (Chem.), a salt analogous to an oxy salt, but
containing sulphur in place of oxygen.
[1913 Webster]Microcosmic \Mi`cro*cos"mic\, Microcosmical \Mi`cro*cos"mic*al\,
a. [Cf. F. microcosmique.]
Of or pertaining to the microcosm.
[1913 Webster]
Microcosmic salt (Chem.), a white crystalline substance
obtained by mixing solutions of sodium phosphate and
ammonium phosphate, and also called
hydric-sodic-ammonic-phosphate. It is a powerful flux,
and is used as a substitute for borax as a blowpipe
reagent in testing for the metallic oxides. Originally
obtained by the alchemists from human urine, and called
sal microcosmicum.
[1913 Webster] |
Microcosmical
(gcide) | Microcosmic \Mi`cro*cos"mic\, Microcosmical \Mi`cro*cos"mic*al\,
a. [Cf. F. microcosmique.]
Of or pertaining to the microcosm.
[1913 Webster]
Microcosmic salt (Chem.), a white crystalline substance
obtained by mixing solutions of sodium phosphate and
ammonium phosphate, and also called
hydric-sodic-ammonic-phosphate. It is a powerful flux,
and is used as a substitute for borax as a blowpipe
reagent in testing for the metallic oxides. Originally
obtained by the alchemists from human urine, and called
sal microcosmicum.
[1913 Webster] |
Microcosmography
(gcide) | Microcosmography \Mi`cro*cos*mog"ra*phy\, n. [Microcosm +
-graphy.]
Description of man as a microcosm.
[1913 Webster] |
Microcoulomb
(gcide) | Microcoulomb \Mi`cro*cou`lomb"\, n. [Micro- + coulomb.] (Elec.)
A measure of electrical quantity; the millionth part of one
coulomb.
[1913 Webster] |
Microcoustic
(gcide) | Microcoustic \Mi`cro*cous"tic\, a. [Micro- + acoustic: cf. F.
microcoustique, micracoustique.]
Pertaining, or suited, to the audition of small sounds;
fitted to assist hearing.
[1913 Webster]Microcoustic \Mi`cro*cous"tic\, n.
An instrument for making faint sounds audible, as to a
partially deaf person.
[1913 Webster] |
Microcrith
(gcide) | Microcrith \Mi`cro*crith"\, n. [Micro- + crith.] (Chem.)
The weight of the half hydrogen molecule, or of the hydrogen
atom, at one time taken as the standard in comparing the
atomic weights of the elements; thus, an atom of oxygen
weighs sixteen microcriths. This unit is no longer used, and
has been replaced by the Dalton, which is of approximately
the same value. See molecular weight and Crith. --J. P.
Cooke.
[1913 Webster +PJC] |
Microcrystalline
(gcide) | Microcrystalline \Mi`cro*crys"tal*line\, a. [Micro- +
crystalline.] (Crystallog.)
Crystalline on a fine, or microscopic, scale; consisting of
fine crystals; as, the ground mass of certain porphyrics is
microcrystalline.
[1913 Webster] |
Microcyte
(gcide) | Microcyte \Mi"cro*cyte\, n. [Micro- + Gr. ? a hollow vessel.]
(Physiol.)
One of the elementary granules found in blood. They are much
smaller than an ordinary corpuscle, and are particularly
noticeable in disease, as in anaemia.
[1913 Webster] |
Microdont
(gcide) | Microdont \Mic"ro*dont\, a. [Micr- + Gr. 'odoy`s, 'odo`ntos, a
tooth.] (Anat.)
Having small teeth.
[1913 Webster] |
Microfarad
(gcide) | Microfarad \Mi`cro*far"ad\, n. [Micro- + farad.] (Elec.)
The millionth part of a farad.
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Microfilm
(gcide) | Microfilm \Mic"ro*film\, n. [Micro- + film.]
a photographic film with one or more very small images of
printed or other graphic matter. Numerous images,
corresponding to the contents of a book, newspaper, or
journal, are typically produced on one long roll of film, and
may be viewed for reading in a special apparatus called a
microfilm reader.
[PJC]Microfilm \Mic"ro*film\, v. t.
to photograph and produce images of on microfilm.
[PJC] |
Microform
(gcide) | Microform \Mi"cro*form\, n. [Micro- + form, n.] (Biol.)
A microscopic form of life; an animal or vegetable organism
of microscopic size.
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Microgadus tomcod
(gcide) | Tomcod \Tom"cod`\ (t[o^]m"k[o^]d`), n. [Tom (see Tomboy) +
cod: cf. F. tacaud whiting pout, American Indian tacaud,
literally, plenty fish.] (Zool.)
(a) A small edible American fish (Microgadus tomcod) of the
Codfish family, very abundant in autumn on the Atlantic
coast of the Northen United States; -- called also
frostfish. See Illust. under Frostfish.
(b) The kingfish. See Kingfish
(a) .
(c) The jack. See 2d Jack, 8.
(c) .
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Micro-geological
(gcide) | Micro-geological \Mi`cro-ge`o*log"ic*al\, a.
Of or pertaining to micro-geology.
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Micro-geology
(gcide) | Micro-geology \Mi`cro-ge*ol"o*gy\, n. [Micro- + geology.]
The part of geology relating to structure and organisms which
require to be studied with a microscope.
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Microglossus aterrimus
(gcide) | Arara \A*ra"ra\, n. [Native name.] (Zool.)
The palm (or great black) cockatoo, of Australia
(Microglossus aterrimus).
[1913 Webster]Cockatoo \Cock`a*too"\ (k[o^]k`[.a]*t[=oo]"), n. [Malayan
kakat[=u]a.] (Zool.)
A bird of the Parrot family, of the subfamily Cacatuin[ae],
having a short, strong, and much curved beak, and the head
ornamented with a crest, which can be raised or depressed at
will. There are several genera and many species; as the
broad-crested cockatoo (Plictolophus cristatus or
Cacatua cristatus), the sulphur-crested (Cacatua galerita
or Plictolophus galeritus), etc. The palm cockatoo or
great black cockatoo of Australia is {Probosciger
aterrimus} (formerly Microglossus aterrimus).
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Micrograph
(gcide) | Micrograph \Mi"cro*graph\, n. [See Micrography.]
1. An instrument for executing minute writing or engraving.
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2. a graphic image, such as a photograph or drawing,
representing an object as seen with a microscope, usually
much enlarged as compared with the original object. A
photograph of a microscopic image is also called a
photomicrograph or microphotograph.
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Micrographic
(gcide) | Micrographic \Mi`cro*graph"ic\, a.
Of or pertaining to micrography.
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Micrography
(gcide) | Micrography \Mi*crog"ra*phy\, n. [Micro- + -graphy: cf. F.
micrographie.]
1. The description of microscopic objects.
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2. Examination or study by means of the microscope, as of an
etched surface of metal to determine its structure.
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Microhm
(gcide) | Microhm \Mi*crohm"\, n. [Micr- + ohm.] (Elec.)
The millionth part of an ohm.
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Microlepidoptera
(gcide) | Microlepidoptera \Mi`cro*lep`i*dop"te*ra\, n. pl. [NL. See
Micro-, and Lepidoptera.] (Zool.)
A tribe of Lepidoptera, including a vast number of minute
species, as the plume moth, clothes moth, etc.
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Microlestes
(gcide) | Microlestes \Mi`cro*les"tes\, n. [NL., from Gr. mikro`s small +
? a robber.] (Paleon.)
An extinct genus of small Triassic mammals, the oldest yet
found in European strata.
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Microlite
(gcide) | Microlite \Mi"cro*lite\, n. [Micro- + -lite.] (Min.)
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1. A rare mineral of resinous luster and high specific
gravity. It is a tantalate of calcium, and occurs in
octahedral crystals usually very minute.
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2. (Min.) A minute inclosed crystal, often observed when
minerals or rocks are examined in thin sections under the
microscope.
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Microlith
(gcide) | Microlith \Mi"cro*lith\, n. [Micro- + lith.] (Min.)
Same as Microlite, 2.
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