| slovo | definícia |
calcium
(encz) | calcium,vápník [chem.] Jiří Šmoldas |
Calcium
(gcide) | Calcium \Cal"ci*um\ (k[a^]l"s[i^]*[u^]m), n. [NL., from L. calx,
calcis, lime; cf F. calcium. See Calx.] (Chem.)
An elementary substance; a metal which combined with oxygen
forms lime. It is of a pale yellow color, tenacious, and
malleable. It is a member of the alkaline earth group of
elements. Atomic weight 40. Symbol Ca.
[1913 Webster]
Note: Calcium is widely and abundantly disseminated, as in
its compounds calcium carbonate or limestone, calcium
sulphate or gypsum, calcium fluoride or fluor spar,
calcium phosphate or apatite.
[1913 Webster]
Calcium light, an intense light produced by the
incandescence of a stick or ball of lime in the flame of a
combination of oxygen and hydrogen gases, or of oxygen and
coal gas; -- called also Drummond light and {lime
light}.
[1913 Webster +PJC] |
calcium
(wn) | calcium
n 1: a white metallic element that burns with a brilliant light;
the fifth most abundant element in the earth's crust; an
important component of most plants and animals [syn:
calcium, Ca, atomic number 20] |
calcium
(elements) | calcium
Symbol: Ca
Atomic number: 20
Atomic weight: 40.08
Soft grey metallic element belonging to group 2 of the periodic table.
Used a reducing agent in the extraction of thorium, zirconium and
uranium. Essential element for living organisms.
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| | podobné slovo | definícia |
calcium bicarbonate
(encz) | calcium bicarbonate,jedlá soda n: VlK |
calcium carbonate
(encz) | calcium carbonate,uhličitan vápenatý [chem.] |
calcium chloride
(encz) | calcium chloride,chlorid vápenatý (CaCl2) n: [chem.] Štěpán Šrubař |
calcium hydroxide
(encz) | calcium hydroxide,hydroxid vápenatý (Ca(OH)2) n: [chem.] VlK |
calcium oxide
(encz) | calcium oxide,kysličník vápenatý (CaO) n: [chem.] VlK |
fenoprofen calcium
(encz) | fenoprofen calcium, n: |
Calcium
(gcide) | Calcium \Cal"ci*um\ (k[a^]l"s[i^]*[u^]m), n. [NL., from L. calx,
calcis, lime; cf F. calcium. See Calx.] (Chem.)
An elementary substance; a metal which combined with oxygen
forms lime. It is of a pale yellow color, tenacious, and
malleable. It is a member of the alkaline earth group of
elements. Atomic weight 40. Symbol Ca.
[1913 Webster]
Note: Calcium is widely and abundantly disseminated, as in
its compounds calcium carbonate or limestone, calcium
sulphate or gypsum, calcium fluoride or fluor spar,
calcium phosphate or apatite.
[1913 Webster]
Calcium light, an intense light produced by the
incandescence of a stick or ball of lime in the flame of a
combination of oxygen and hydrogen gases, or of oxygen and
coal gas; -- called also Drummond light and {lime
light}.
[1913 Webster +PJC] |
Calcium fluoride
(gcide) | Fluoride \Flu"or*ide\ (? or ?; 104), n. [Cf. F. fluoride.]
(Chem.)
A binary compound of fluorine with another element or
radical.
[1913 Webster]
Calcium fluoride (Min.), fluorite, CaF2. See Fluorite.
[1913 Webster] |
calcium hypochlorite
(gcide) | Chloride \Chlo"ride\, n. (Chem.)
A binary compound of chlorine with another element or
radical; as, chloride of sodium (common salt).
[1913 Webster]
Chloride of ammonium, sal ammoniac.
Chloride of lime, bleaching powder; a grayish white
substance, CaOCl2, used in bleaching and disinfecting;
-- called more properly calcium hypochlorite. See
Hypochlorous acid, under Hypochlorous.
Mercuric chloride, corrosive sublimate.
[1913 Webster] |
Calcium light
(gcide) | Light \Light\ (l[imac]t), n. [OE. light, liht, AS. le['i]ht;
akin to OS. lioht, D. & G. licht, OHG. lioht, Goth.
liuha[thorn], Icel. lj[=o]s, L. lux light, lucere to shine,
Gr. leyko`s white, Skr. ruc to shine. [root]122. Cf. Lucid,
Lunar, Luminous, Lynx.]
1. That agent, force, or action in nature by the operation of
which upon the organs of sight, objects are rendered
visible or luminous.
[1913 Webster]
Note: Light was regarded formerly as consisting of material
particles, or corpuscules, sent off in all directions
from luminous bodies, and traversing space, in right
lines, with the known velocity of about 186,300 miles
per second; but it is now generally understood to
consist, not in any actual transmission of particles or
substance, but in the propagation of vibrations or
undulations in a subtile, elastic medium, or ether,
assumed to pervade all space, and to be thus set in
vibratory motion by the action of luminous bodies, as
the atmosphere is by sonorous bodies. This view of the
nature of light is known as the undulatory or wave
theory; the other, advocated by Newton (but long since
abandoned), as the corpuscular, emission, or Newtonian
theory. A more recent theory makes light to consist in
electrical oscillations, and is known as the
electro-magnetic theory of light.
[1913 Webster]
2. That which furnishes, or is a source of, light, as the
sun, a star, a candle, a lighthouse, etc.
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Then he called for a light, and sprang in. --Acts
xvi. 29.
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And God made two great lights; the greater light to
rule the day, and the lesser light to rule the
night. --Gen. i. 16.
[1913 Webster]
3. The time during which the light of the sun is visible;
day; especially, the dawn of day.
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The murderer, rising with the light, killeth the
poor and needy. --Job xxiv.
14.
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4. The brightness of the eye or eyes.
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He seemed to find his way without his eyes;
For out o'door he went without their helps,
And, to the last, bended their light on me. --Shak.
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5. The medium through which light is admitted, as a window,
or window pane; a skylight; in architecture, one of the
compartments of a window made by a mullion or mullions.
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There were windows in three rows, and light was
against light in three ranks. --I Kings
vii.4.
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6. Life; existence.
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O, spring to light, auspicious Babe, be born !
--Pope.
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7. Open view; a visible state or condition; public
observation; publicity.
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The duke yet would have dark deeds darkly answered;
he would never bring them to light. --Shak.
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8. The power of perception by vision.
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My strength faileth me; as for the light of my eyes,
it also is gone from me. --Ps. xxxviii.
10.
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9. That which illumines or makes clear to the mind; mental or
spiritual illumination; enlightenment; knowledge;
information.
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He shall never know
That I had any light of this from thee. --Shak.
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10. Prosperity; happiness; joy; felicity.
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Then shall thy light break forth as the morning,
and thy health shall spring forth speedily. --Is.
lviii. 8.
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11. (Paint.) The manner in which the light strikes upon a
picture; that part of a picture which represents those
objects upon which the light is supposed to fall; the
more illuminated part of a landscape or other scene; --
opposed to shade. Cf. Chiaroscuro.
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12. Appearance due to the particular facts and circumstances
presented to view; point of view; as, to state things
fairly and put them in the right light.
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Frequent consideration of a thing . . . shows it in
its several lights and various ways of appearance.
--South.
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13. One who is conspicuous or noteworthy; a model or example;
as, the lights of the age or of antiquity.
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Joan of Arc,
A light of ancient France. --Tennyson.
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14. (Pyrotech.) A firework made by filling a case with a
substance which burns brilliantly with a white or colored
flame; as, a Bengal light.
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Note: Light is used figuratively to denote that which
resembles physical light in any respect, as
illuminating, benefiting, enlightening, or enlivening
mankind.
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Ancient lights (Law), Calcium light, Flash light, etc.
See under Ancient, Calcium, etc.
Light ball (Mil.), a ball of combustible materials, used to
afford light; -- sometimes made so as to be fired from a
cannon or mortar, or to be carried up by a rocket.
Light barrel (Mil.), an empty power barrel pierced with
holes and filled with shavings soaked in pitch, used to
light up a ditch or a breach.
Light dues (Com.), tolls levied on ships navigating certain
waters, for the maintenance of lighthouses.
Light iron, a candlestick. [Obs.]
Light keeper, a person appointed to take care of a
lighthouse or light-ship.
Light money, charges laid by government on shipping
entering a port, for the maintenance of lighthouses and
light-ships.
The light of the countenance, favor; kindness; smiles.
[1913 Webster]
Lord, lift thou up the light of thy countenance upon
us. --Ps. iv. 6.
Northern lights. See Aurora borealis, under Aurora.
To bring to light, to cause to be disclosed.
To come to light, to be disclosed.
To see the light, to come into the light; hence, to come
into the world or into public notice; as, his book never
saw the light.
To stand in one's own light, to take a position which is
injurious to one's own interest.
[1913 Webster]Calcium \Cal"ci*um\ (k[a^]l"s[i^]*[u^]m), n. [NL., from L. calx,
calcis, lime; cf F. calcium. See Calx.] (Chem.)
An elementary substance; a metal which combined with oxygen
forms lime. It is of a pale yellow color, tenacious, and
malleable. It is a member of the alkaline earth group of
elements. Atomic weight 40. Symbol Ca.
[1913 Webster]
Note: Calcium is widely and abundantly disseminated, as in
its compounds calcium carbonate or limestone, calcium
sulphate or gypsum, calcium fluoride or fluor spar,
calcium phosphate or apatite.
[1913 Webster]
Calcium light, an intense light produced by the
incandescence of a stick or ball of lime in the flame of a
combination of oxygen and hydrogen gases, or of oxygen and
coal gas; -- called also Drummond light and {lime
light}.
[1913 Webster +PJC] |
Oxycalcium
(gcide) | Oxycalcium \Ox`y*cal"ci*um\, a. [Oxy
(a) + calcium.] Of or pertaining to oxygen and calcium; as,
the oxycalcium light. See Drummond light.
[1913 Webster] |
oxycalcium light
(gcide) | Drummond light \Drum"mond light`\ [From Thomas Drummond, a
British naval officer.]
A very intense light, produced by turning two streams of gas,
one oxygen and the other hydrogen, or coal gas, in a state of
ignition, upon a ball of lime; or a stream of oxygen gas
through a flame of alcohol upon a ball or disk of lime; --
called also oxycalcium light, or lime light.
[1913 Webster]
Note: The name is also applied sometimes to a heliostat,
invented by Drummond, for rendering visible a distant
point, as in geodetic surveying, by reflecting upon it
a beam of light from the sun.
[1913 Webster] |
calcium bicarbonate
(wn) | calcium bicarbonate
n 1: a bicarbonate that is a major cause of hard water |
calcium blocker
(wn) | calcium blocker
n 1: any of a class of drugs that block the flow of the
electrolyte calcium (either in nerve cell conduction or
smooth muscle contraction of the heart); has been used in
the treatment of angina or arrhythmia or hypertension or
migraine [syn: calcium blocker, {calcium-channel
blocker}] |
calcium carbide
(wn) | calcium carbide
n 1: a grey salt of calcium (CaC) used in making acetylene |
calcium carbonate
(wn) | calcium carbonate
n 1: a salt found in nature as chalk or calcite or aragonite or
limestone |
calcium chloride
(wn) | calcium chloride
n 1: a deliquescent salt; used in de-icing and as a drying agent |
calcium hydrate
(wn) | calcium hydrate
n 1: a caustic substance produced by heating limestone [syn:
calcium hydroxide, lime, slaked lime, {hydrated
lime}, calcium hydrate, caustic lime, lime hydrate] |
calcium hydride
(wn) | calcium hydride
n 1: a saltlike binary compound (CaH2) used as a reducing agent
and source of hydrogen [syn: calcium hydride,
hydrolith] |
calcium hydroxide
(wn) | calcium hydroxide
n 1: a caustic substance produced by heating limestone [syn:
calcium hydroxide, lime, slaked lime, {hydrated
lime}, calcium hydrate, caustic lime, lime hydrate] |
calcium hypochlorite
(wn) | calcium hypochlorite
n 1: any hypochlorite of calcium; used as a bleaching agent |
calcium ion
(wn) | calcium ion
n 1: ion of calcium; a factor in the clotting of blood [syn:
calcium ion, factor IV] |
calcium lactate
(wn) | calcium lactate
n 1: a white crystalline salt made by the action of lactic acid
on calcium carbonate; used in foods (as a baking powder)
and given medically as a source of calcium |
calcium light
(wn) | calcium light
n 1: a lamp consisting of a flame directed at a cylinder of lime
with a lens to concentrate the light; formerly used for
stage lighting [syn: limelight, calcium light] |
calcium nitrate
(wn) | calcium nitrate
n 1: a deliquescent salt that is soluble in water; sometimes
used as a source of nitrogen in fertilizers |
calcium octadecanoate
(wn) | calcium octadecanoate
n 1: an insoluble calcium salt of stearic acid and palmitic
acid; it is formed when soap is mixed with water that
contains calcium ions and is the scum produced in regions
of hard water [syn: calcium stearate, {calcium
octadecanoate}] |
calcium oxide
(wn) | calcium oxide
n 1: a white crystalline oxide used in the production of calcium
hydroxide [syn: calcium oxide, quicklime, lime,
calx, calcined lime, fluxing lime, unslaked lime,
burnt lime] |
calcium phosphate
(wn) | calcium phosphate
n 1: a phosphate of calcium; a main constituent of animal bones |
calcium stearate
(wn) | calcium stearate
n 1: an insoluble calcium salt of stearic acid and palmitic
acid; it is formed when soap is mixed with water that
contains calcium ions and is the scum produced in regions
of hard water [syn: calcium stearate, {calcium
octadecanoate}] |
calcium sulfate
(wn) | calcium sulfate
n 1: a white salt (CaSO4) [syn: calcium sulphate, {calcium
sulfate}] |
calcium sulphate
(wn) | calcium sulphate
n 1: a white salt (CaSO4) [syn: calcium sulphate, {calcium
sulfate}] |
calcium-channel blocker
(wn) | calcium-channel blocker
n 1: any of a class of drugs that block the flow of the
electrolyte calcium (either in nerve cell conduction or
smooth muscle contraction of the heart); has been used in
the treatment of angina or arrhythmia or hypertension or
migraine [syn: calcium blocker, {calcium-channel
blocker}] |
calcium-cyanamide
(wn) | calcium-cyanamide
n 1: a compound used as a fertilizer and as a source of nitrogen
compounds [syn: calcium-cyanamide, cyanamide] |
fenoprofen calcium
(wn) | fenoprofen calcium
n 1: a nonsteroidal anti-inflammatory drug (trade name Nalfon)
used in the treatment of arthritis and other painful
inflammatory disorders [syn: fenoprofen, {fenoprofen
calcium}, Nalfon] |
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