| slovo | definícia |
circles
(encz) | circles,kruhy n: pl. Zdeněk Brož |
| | podobné slovo | definícia |
circles
(encz) | circles,kruhy n: pl. Zdeněk Brož |
circles around you
(encz) | circles around you,umí ... mnohem lépe než ty Zdeněk Brož |
go in circles
(encz) | go in circles, |
in circles
(encz) | in circles, adv: |
run circles around someone
(encz) | run circles around someone,povyšovat se nad někým [id.] Pino |
run circles around you
(encz) | run circles around you, |
Circles of longitude
(gcide) | Circle \Cir"cle\ (s[~e]r"k'l), n. [OE. cercle, F. cercle, fr. L.
circulus (Whence also AS. circul), dim. of circus circle,
akin to Gr. kri`kos, ki`rkos, circle, ring. Cf. Circus,
Circum-.]
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1. A plane figure, bounded by a single curve line called its
circumference, every part of which is equally distant from
a point within it, called the center.
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2. The line that bounds such a figure; a circumference; a
ring.
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3. (Astron.) An instrument of observation, the graduated limb
of which consists of an entire circle.
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Note: When it is fixed to a wall in an observatory, it is
called a mural circle; when mounted with a telescope
on an axis and in Y's, in the plane of the meridian, a
meridian circle or transit circle; when involving
the principle of reflection, like the sextant, a
reflecting circle; and when that of repeating an
angle several times continuously along the graduated
limb, a repeating circle.
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4. A round body; a sphere; an orb.
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It is he that sitteth upon the circle of the earth.
--Is. xi. 22.
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5. Compass; circuit; inclosure.
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In the circle of this forest. --Shak.
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6. A company assembled, or conceived to assemble, about a
central point of interest, or bound by a common tie; a
class or division of society; a coterie; a set.
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As his name gradually became known, the circle of
his acquaintance widened. --Macaulay.
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7. A circular group of persons; a ring.
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8. A series ending where it begins, and repeating itself.
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Thus in a circle runs the peasant's pain. --Dryden.
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9. (Logic) A form of argument in which two or more unproved
statements are used to prove each other; inconclusive
reasoning.
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That heavy bodies descend by gravity; and, again,
that gravity is a quality whereby a heavy body
descends, is an impertinent circle and teaches
nothing. --Glanvill.
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10. Indirect form of words; circumlocution. [R.]
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Has he given the lie,
In circle, or oblique, or semicircle. --J.
Fletcher.
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11. A territorial division or district.
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Note:
The Circles of the Holy Roman Empire, ten in number, were
those principalities or provinces which had seats in the
German Diet.
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Azimuth circle. See under Azimuth.
Circle of altitude (Astron.), a circle parallel to the
horizon, having its pole in the zenith; an almucantar.
Circle of curvature. See Osculating circle of a curve
(Below).
Circle of declination. See under Declination.
Circle of latitude.
(a) (Astron.) A great circle perpendicular to the plane
of the ecliptic, passing through its poles.
(b) (Spherical Projection) A small circle of the sphere
whose plane is perpendicular to the axis.
Circles of longitude, lesser circles parallel to the
ecliptic, diminishing as they recede from it.
Circle of perpetual apparition, at any given place, the
boundary of that space around the elevated pole, within
which the stars never set. Its distance from the pole is
equal to the latitude of the place.
Circle of perpetual occultation, at any given place, the
boundary of the space around the depressed pole, within
which the stars never rise.
Circle of the sphere, a circle upon the surface of the
sphere, called a great circle when its plane passes
through the center of the sphere; in all other cases, a
small circle.
Diurnal circle. See under Diurnal.
Dress circle, a gallery in a theater, generally the one
containing the prominent and more expensive seats.
Druidical circles (Eng. Antiq.), a popular name for certain
ancient inclosures formed by rude stones circularly
arranged, as at Stonehenge, near Salisbury.
Family circle, a gallery in a theater, usually one
containing inexpensive seats.
Horary circles (Dialing), the lines on dials which show the
hours.
Osculating circle of a curve (Geom.), the circle which
touches the curve at some point in the curve, and close to
the point more nearly coincides with the curve than any
other circle. This circle is used as a measure of the
curvature of the curve at the point, and hence is called
circle of curvature.
Pitch circle. See under Pitch.
Vertical circle, an azimuth circle.
Voltaic circuit or Voltaic circle. See under Circuit.
To square the circle. See under Square.
Syn: Ring; circlet; compass; circuit; inclosure.
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Druidical circles
(gcide) | Druidic \Dru*id"ic\, Druidical \Dru*id"ic*al\, a.
Pertaining to, or resembling, the Druids.
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Druidical circles. See under Circle.
[1913 Webster]Circle \Cir"cle\ (s[~e]r"k'l), n. [OE. cercle, F. cercle, fr. L.
circulus (Whence also AS. circul), dim. of circus circle,
akin to Gr. kri`kos, ki`rkos, circle, ring. Cf. Circus,
Circum-.]
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1. A plane figure, bounded by a single curve line called its
circumference, every part of which is equally distant from
a point within it, called the center.
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2. The line that bounds such a figure; a circumference; a
ring.
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3. (Astron.) An instrument of observation, the graduated limb
of which consists of an entire circle.
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Note: When it is fixed to a wall in an observatory, it is
called a mural circle; when mounted with a telescope
on an axis and in Y's, in the plane of the meridian, a
meridian circle or transit circle; when involving
the principle of reflection, like the sextant, a
reflecting circle; and when that of repeating an
angle several times continuously along the graduated
limb, a repeating circle.
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4. A round body; a sphere; an orb.
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It is he that sitteth upon the circle of the earth.
--Is. xi. 22.
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5. Compass; circuit; inclosure.
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In the circle of this forest. --Shak.
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6. A company assembled, or conceived to assemble, about a
central point of interest, or bound by a common tie; a
class or division of society; a coterie; a set.
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As his name gradually became known, the circle of
his acquaintance widened. --Macaulay.
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7. A circular group of persons; a ring.
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8. A series ending where it begins, and repeating itself.
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Thus in a circle runs the peasant's pain. --Dryden.
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9. (Logic) A form of argument in which two or more unproved
statements are used to prove each other; inconclusive
reasoning.
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That heavy bodies descend by gravity; and, again,
that gravity is a quality whereby a heavy body
descends, is an impertinent circle and teaches
nothing. --Glanvill.
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10. Indirect form of words; circumlocution. [R.]
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Has he given the lie,
In circle, or oblique, or semicircle. --J.
Fletcher.
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11. A territorial division or district.
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Note:
The Circles of the Holy Roman Empire, ten in number, were
those principalities or provinces which had seats in the
German Diet.
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Azimuth circle. See under Azimuth.
Circle of altitude (Astron.), a circle parallel to the
horizon, having its pole in the zenith; an almucantar.
Circle of curvature. See Osculating circle of a curve
(Below).
Circle of declination. See under Declination.
Circle of latitude.
(a) (Astron.) A great circle perpendicular to the plane
of the ecliptic, passing through its poles.
(b) (Spherical Projection) A small circle of the sphere
whose plane is perpendicular to the axis.
Circles of longitude, lesser circles parallel to the
ecliptic, diminishing as they recede from it.
Circle of perpetual apparition, at any given place, the
boundary of that space around the elevated pole, within
which the stars never set. Its distance from the pole is
equal to the latitude of the place.
Circle of perpetual occultation, at any given place, the
boundary of the space around the depressed pole, within
which the stars never rise.
Circle of the sphere, a circle upon the surface of the
sphere, called a great circle when its plane passes
through the center of the sphere; in all other cases, a
small circle.
Diurnal circle. See under Diurnal.
Dress circle, a gallery in a theater, generally the one
containing the prominent and more expensive seats.
Druidical circles (Eng. Antiq.), a popular name for certain
ancient inclosures formed by rude stones circularly
arranged, as at Stonehenge, near Salisbury.
Family circle, a gallery in a theater, usually one
containing inexpensive seats.
Horary circles (Dialing), the lines on dials which show the
hours.
Osculating circle of a curve (Geom.), the circle which
touches the curve at some point in the curve, and close to
the point more nearly coincides with the curve than any
other circle. This circle is used as a measure of the
curvature of the curve at the point, and hence is called
circle of curvature.
Pitch circle. See under Pitch.
Vertical circle, an azimuth circle.
Voltaic circuit or Voltaic circle. See under Circuit.
To square the circle. See under Square.
Syn: Ring; circlet; compass; circuit; inclosure.
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Fairy circles
(gcide) | Fairy \Fair"y\, a.
1. Of or pertaining to fairies.
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2. Given by fairies; as, fairy money. --Dryden.
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Fairy bird (Zool.), the Euoropean little tern ({Sterna
minuta}); -- called also sea swallow, and hooded tern.
Fairy bluebird. (Zool.) See under Bluebird.
Fairy martin (Zool.), a European swallow (Hirrundo ariel)
that builds flask-shaped nests of mud on overhanging
cliffs.
Fairy rings or Fairy circles, the circles formed in
grassy lawns by certain fungi (as Marasmius Oreades),
formerly supposed to be caused by fairies in their
midnight dances; also, the mushrooms themselves. Such
circles may have diameters larger than three meters.
Fairy shrimp (Zool.), a European fresh-water phyllopod
crustacean (Chirocephalus diaphanus); -- so called from
its delicate colors, transparency, and graceful motions.
The name is sometimes applied to similar American species.
Fairy stone (Paleon.), an echinite.
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Horary circles
(gcide) | Horary \Ho"ra*ry\, a. [LL. horarius, fr. L. hora hour: cf. F.
horaire. See Hour.]
1. Of or pertaining to an hour; noting the hours.
--Spectator.
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2. Occurring once an hour; continuing an hour; hourly;
ephemeral.
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Horary, or soon decaying, fruits of summer. --Sir T.
Browne.
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Horary circles. See Circles.
[1913 Webster]Circle \Cir"cle\ (s[~e]r"k'l), n. [OE. cercle, F. cercle, fr. L.
circulus (Whence also AS. circul), dim. of circus circle,
akin to Gr. kri`kos, ki`rkos, circle, ring. Cf. Circus,
Circum-.]
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1. A plane figure, bounded by a single curve line called its
circumference, every part of which is equally distant from
a point within it, called the center.
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2. The line that bounds such a figure; a circumference; a
ring.
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3. (Astron.) An instrument of observation, the graduated limb
of which consists of an entire circle.
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Note: When it is fixed to a wall in an observatory, it is
called a mural circle; when mounted with a telescope
on an axis and in Y's, in the plane of the meridian, a
meridian circle or transit circle; when involving
the principle of reflection, like the sextant, a
reflecting circle; and when that of repeating an
angle several times continuously along the graduated
limb, a repeating circle.
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4. A round body; a sphere; an orb.
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It is he that sitteth upon the circle of the earth.
--Is. xi. 22.
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5. Compass; circuit; inclosure.
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In the circle of this forest. --Shak.
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6. A company assembled, or conceived to assemble, about a
central point of interest, or bound by a common tie; a
class or division of society; a coterie; a set.
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As his name gradually became known, the circle of
his acquaintance widened. --Macaulay.
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7. A circular group of persons; a ring.
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8. A series ending where it begins, and repeating itself.
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Thus in a circle runs the peasant's pain. --Dryden.
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9. (Logic) A form of argument in which two or more unproved
statements are used to prove each other; inconclusive
reasoning.
[1913 Webster]
That heavy bodies descend by gravity; and, again,
that gravity is a quality whereby a heavy body
descends, is an impertinent circle and teaches
nothing. --Glanvill.
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10. Indirect form of words; circumlocution. [R.]
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Has he given the lie,
In circle, or oblique, or semicircle. --J.
Fletcher.
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11. A territorial division or district.
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Note:
The Circles of the Holy Roman Empire, ten in number, were
those principalities or provinces which had seats in the
German Diet.
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Azimuth circle. See under Azimuth.
Circle of altitude (Astron.), a circle parallel to the
horizon, having its pole in the zenith; an almucantar.
Circle of curvature. See Osculating circle of a curve
(Below).
Circle of declination. See under Declination.
Circle of latitude.
(a) (Astron.) A great circle perpendicular to the plane
of the ecliptic, passing through its poles.
(b) (Spherical Projection) A small circle of the sphere
whose plane is perpendicular to the axis.
Circles of longitude, lesser circles parallel to the
ecliptic, diminishing as they recede from it.
Circle of perpetual apparition, at any given place, the
boundary of that space around the elevated pole, within
which the stars never set. Its distance from the pole is
equal to the latitude of the place.
Circle of perpetual occultation, at any given place, the
boundary of the space around the depressed pole, within
which the stars never rise.
Circle of the sphere, a circle upon the surface of the
sphere, called a great circle when its plane passes
through the center of the sphere; in all other cases, a
small circle.
Diurnal circle. See under Diurnal.
Dress circle, a gallery in a theater, generally the one
containing the prominent and more expensive seats.
Druidical circles (Eng. Antiq.), a popular name for certain
ancient inclosures formed by rude stones circularly
arranged, as at Stonehenge, near Salisbury.
Family circle, a gallery in a theater, usually one
containing inexpensive seats.
Horary circles (Dialing), the lines on dials which show the
hours.
Osculating circle of a curve (Geom.), the circle which
touches the curve at some point in the curve, and close to
the point more nearly coincides with the curve than any
other circle. This circle is used as a measure of the
curvature of the curve at the point, and hence is called
circle of curvature.
Pitch circle. See under Pitch.
Vertical circle, an azimuth circle.
Voltaic circuit or Voltaic circle. See under Circuit.
To square the circle. See under Square.
Syn: Ring; circlet; compass; circuit; inclosure.
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Parallel circles of a sphere
(gcide) | Parallel \Par"al*lel\, a. [F. parall[`e]le, L. parallelus, fr.
Gr. ?; para` beside + ? of one another, fr. ? other, akin to
L. alius. See Alien.]
1. (Geom.) Extended in the same direction, and in all parts
equally distant; as, parallel lines; parallel planes.
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Revolutions . . . parallel to the equinoctial.
--Hakluyt.
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Note: Curved lines or curved planes are said to be parallel
when they are in all parts equally distant.
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2. Having the same direction or tendency; running side by
side; being in accordance (with); tending to the same
result; -- used with to and with.
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When honor runs parallel with the laws of God and
our country, it can not be too much cherished.
--Addison.
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3. Continuing a resemblance through many particulars;
applicable in all essential parts; like; similar; as, a
parallel case; a parallel passage. --Addison.
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Parallel bar.
(a) (Steam Eng.) A rod in a parallel motion which is
parallel with the working beam.
(b) One of a pair of bars raised about five feet above the
floor or ground, and parallel to each other, -- used
for gymnastic exercises.
Parallel circles of a sphere, those circles of the sphere
whose planes are parallel to each other.
Parallel columns, or Parallels (Printing), two or more
passages of reading matter printed side by side, for the
purpose of emphasizing the similarity or discrepancy
between them.
Parallel forces (Mech.), forces which act in directions
parallel to each other.
Parallel motion.
(a) (Mach.) A jointed system of links, rods, or bars, by
which the motion of a reciprocating piece, as a piston
rod, may be guided, either approximately or exactly in
a straight line. --Rankine.
(b) (Mus.) The ascending or descending of two or more
parts at fixed intervals, as thirds or sixths.
Parallel rod (Locomotive Eng.), a metal rod that connects
the crank pins of two or more driving wheels; -- called
also couping rod, in distinction from the connecting
rod. See Illust. of Locomotive, in App. -- {Parallel
ruler}, an instrument for drawing parallel lines, so
constructed as to have the successive positions of the
ruling edge parallel to each other; also, one consisting
of two movable parts, the opposite edges of which are
always parallel.
Parallel sailing (Naut.), sailing on a parallel of
latitude.
Parallel sphere (Astron. & Geog.), that position of the
sphere in which the circles of daily motion are parallel
to the horizon, as to an observer at either pole.
Parallel vise, a vise having jaws so guided as to remain
parallel in all positions.
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Polar circles
(gcide) | Polar \Po"lar\, a. [Cf. F. polaire. See Pole of the earth.]
1. Of or pertaining to one of the poles of the earth, or of a
sphere; situated near, or proceeding from, one of the
poles; as, polar regions; polar seas; polar winds.
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2. Of or pertaining to the magnetic pole, or to the point to
which the magnetic needle is directed.
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3. (Geom.) Pertaining to, reckoned from, or having a common
radiating point; as, polar coordinates.
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Polar axis, that axis of an astronomical instrument, as an
equatorial, which is parallel to the earths axis.
Polar bear (Zool.), a large bear (Ursus maritimus syn.
Thalarctos maritimus) inhabiting the arctic regions. It
sometimes measures nearly nine feet in length and weighs
1,600 pounds. It is partially amphibious, very powerful,
and the most carnivorous of all the bears. The fur is
white, tinged with yellow. Called also White bear. See
Bear.
Polar body, Polar cell, or Polar globule (Biol.), a
minute cell which separates by karyokinesis from the ovum
during its maturation. In the maturation of ordinary ova
two polar bodies are formed, but in parthogenetic ova only
one. The first polar body formed is usually larger than
the second one, and often divides into two after its
separation from the ovum. Each of the polar bodies removes
maternal chromatin from the ovum to make room for the
chromatin of the fertilizing spermatozoon; but their
functions are not fully understood.
Polar circles (Astron. & Geog.), two circles, each at a
distance from a pole of the earth equal to the obliquity
of the ecliptic, or about 23[deg] 28', the northern called
the arctic circle, and the southern the antarctic circle.
Polar clock, a tube, containing a polarizing apparatus,
turning on an axis parallel to that of the earth, and
indicating the hour of the day on an hour circle, by being
turned toward the plane of maximum polarization of the
light of the sky, which is always 90[deg] from the sun.
Polar coordinates. See under 3d Coordinate.
Polar dial, a dial whose plane is parallel to a great
circle passing through the poles of the earth. --Math.
Dict.
Polar distance, the angular distance of any point on a
sphere from one of its poles, particularly of a heavenly
body from the north pole of the heavens.
Polar equation of a line or Polar equation of a surface,
an equation which expresses the relation between the polar
coordinates of every point of the line or surface.
Polar forces (Physics), forces that are developed and act
in pairs, with opposite tendencies or properties in the
two elements, as magnetism, electricity, etc.
Polar hare (Zool.), a large hare of Arctic America ({Lepus
arcticus}), which turns pure white in winter. It is
probably a variety of the common European hare ({Lepus
timidus}).
Polar lights, the aurora borealis or australis.
Polar opposition, or Polaric opposition or {Polar
contrast} or Polaric contrast (Logic), an opposition or
contrast made by the existence of two opposite conceptions
which are the extremes in a species, as white and black in
colors; hence, as great an opposition or contrast as
possible.
Polar projection. See under Projection.
Polar spherical triangle (Spherics), a spherical triangle
whose three angular points are poles of the sides of a
given triangle. See 4th Pole, 2.
Polar whale (Zool.), the right whale, or bowhead. See
Whale.
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Radical axis of two circles
(gcide) | Radical \Rad"i*cal\ (r[a^]d"[i^]*kal), a. [F., fr. L. radicalis
having roots, fr. radix, -icis, a root. See Radix.]
1. Of or pertaining to the root; proceeding directly from the
root.
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2. Hence: Of or pertaining to the root or origin; reaching to
the center, to the foundation, to the ultimate sources, to
the principles, or the like; original; fundamental;
thorough-going; unsparing; extreme; as, radical evils;
radical reform; a radical party.
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The most determined exertions of that authority,
against them, only showed their radical
independence. --Burke.
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3. (Bot.)
(a) Belonging to, or proceeding from, the root of a plant;
as, radical tubers or hairs.
(b) Proceeding from a rootlike stem, or one which does not
rise above the ground; as, the radical leaves of the
dandelion and the sidesaddle flower.
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4. (Philol.) Relating, or belonging, to the root, or ultimate
source of derivation; as, a radical verbal form.
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5. (Math.) Of or pertaining to a radix or root; as, a radical
quantity; a radical sign. See below.
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Radical axis of two circles. (Geom.) See under Axis.
Radical pitch, the pitch or tone with which the utterance
of a syllable begins. --Rush.
Radical quantity (Alg.), a quantity to which the radical
sign is prefixed; specifically, a quantity which is not a
perfect power of the degree indicated by the radical sign;
a surd.
Radical sign (Math.), the sign [root] (originally the
letter r, the initial of radix, root), placed before any
quantity, denoting that its root is to be extracted; thus,
[root]a, or [root](a + b). To indicate any other than the
square root, a corresponding figure is placed over the
sign; thus, [cuberoot]a, indicates the third or cube root
of a.
Radical stress (Elocution), force of utterance falling on
the initial part of a syllable or sound.
Radical vessels (Anat.), minute vessels which originate in
the substance of the tissues.
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Syn: Primitive; original; natural; underived; fundamental;
entire.
Usage: Radical, Entire. These words are frequently
employed as interchangeable in describing some marked
alteration in the condition of things. There is,
however, an obvious difference between them. A radical
cure, reform, etc., is one which goes to the root of
the thing in question; and it is entire, in the sense
that, by affecting the root, it affects in an
appropriate degree the entire body nourished by the
root; but it may not be entire in the sense of making
a change complete in its nature, as well as in its
extent. Hence, we speak of a radical change; a radical
improvement; radical differences of opinion; while an
entire change, an entire improvement, an entire
difference of opinion, might indicate more than was
actually intended. A certain change may be both
radical and entire, in every sense.
[1913 Webster]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.
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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.
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3. (Bot.) The stem; the central part, or longitudinal
support, on which organs or parts are arranged; the
central line of any body. --Gray.
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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.
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5. (Crystallog.) One of several imaginary lines, assumed in
describing the position of the planes by which a crystal
is bounded.
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6. (Fine Arts) The primary or secondary central line of any
design.
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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.
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The Circles of the Holy Roman Empire
(gcide) | Circle \Cir"cle\ (s[~e]r"k'l), n. [OE. cercle, F. cercle, fr. L.
circulus (Whence also AS. circul), dim. of circus circle,
akin to Gr. kri`kos, ki`rkos, circle, ring. Cf. Circus,
Circum-.]
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1. A plane figure, bounded by a single curve line called its
circumference, every part of which is equally distant from
a point within it, called the center.
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2. The line that bounds such a figure; a circumference; a
ring.
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3. (Astron.) An instrument of observation, the graduated limb
of which consists of an entire circle.
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Note: When it is fixed to a wall in an observatory, it is
called a mural circle; when mounted with a telescope
on an axis and in Y's, in the plane of the meridian, a
meridian circle or transit circle; when involving
the principle of reflection, like the sextant, a
reflecting circle; and when that of repeating an
angle several times continuously along the graduated
limb, a repeating circle.
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4. A round body; a sphere; an orb.
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It is he that sitteth upon the circle of the earth.
--Is. xi. 22.
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5. Compass; circuit; inclosure.
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In the circle of this forest. --Shak.
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6. A company assembled, or conceived to assemble, about a
central point of interest, or bound by a common tie; a
class or division of society; a coterie; a set.
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As his name gradually became known, the circle of
his acquaintance widened. --Macaulay.
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7. A circular group of persons; a ring.
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8. A series ending where it begins, and repeating itself.
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Thus in a circle runs the peasant's pain. --Dryden.
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9. (Logic) A form of argument in which two or more unproved
statements are used to prove each other; inconclusive
reasoning.
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That heavy bodies descend by gravity; and, again,
that gravity is a quality whereby a heavy body
descends, is an impertinent circle and teaches
nothing. --Glanvill.
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10. Indirect form of words; circumlocution. [R.]
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Has he given the lie,
In circle, or oblique, or semicircle. --J.
Fletcher.
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11. A territorial division or district.
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Note:
The Circles of the Holy Roman Empire, ten in number, were
those principalities or provinces which had seats in the
German Diet.
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Azimuth circle. See under Azimuth.
Circle of altitude (Astron.), a circle parallel to the
horizon, having its pole in the zenith; an almucantar.
Circle of curvature. See Osculating circle of a curve
(Below).
Circle of declination. See under Declination.
Circle of latitude.
(a) (Astron.) A great circle perpendicular to the plane
of the ecliptic, passing through its poles.
(b) (Spherical Projection) A small circle of the sphere
whose plane is perpendicular to the axis.
Circles of longitude, lesser circles parallel to the
ecliptic, diminishing as they recede from it.
Circle of perpetual apparition, at any given place, the
boundary of that space around the elevated pole, within
which the stars never set. Its distance from the pole is
equal to the latitude of the place.
Circle of perpetual occultation, at any given place, the
boundary of the space around the depressed pole, within
which the stars never rise.
Circle of the sphere, a circle upon the surface of the
sphere, called a great circle when its plane passes
through the center of the sphere; in all other cases, a
small circle.
Diurnal circle. See under Diurnal.
Dress circle, a gallery in a theater, generally the one
containing the prominent and more expensive seats.
Druidical circles (Eng. Antiq.), a popular name for certain
ancient inclosures formed by rude stones circularly
arranged, as at Stonehenge, near Salisbury.
Family circle, a gallery in a theater, usually one
containing inexpensive seats.
Horary circles (Dialing), the lines on dials which show the
hours.
Osculating circle of a curve (Geom.), the circle which
touches the curve at some point in the curve, and close to
the point more nearly coincides with the curve than any
other circle. This circle is used as a measure of the
curvature of the curve at the point, and hence is called
circle of curvature.
Pitch circle. See under Pitch.
Vertical circle, an azimuth circle.
Voltaic circuit or Voltaic circle. See under Circuit.
To square the circle. See under Square.
Syn: Ring; circlet; compass; circuit; inclosure.
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in circles
(wn) | in circles
adv 1: without making progress; "the candidates talked in
circles" |
|