calcium

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cal·ci·um

 (kăl′sē-əm)
n. Symbol Ca
A silvery, moderately hard alkaline-earth metal that constitutes approximately 3.6 percent of the earth's crust and is a basic component of most animals and plants. It occurs naturally in limestone, gypsum, and fluorite, and its compounds are used to make plaster, quicklime, Portland cement, and metallurgic and electronic materials. Atomic number 20; atomic weight 40.08; melting point 842°C; boiling point 1,484°C; specific gravity 1.54; valence 2. See Periodic Table.

[Latin calx, calc-, lime; see calx + -ium.]

calcium

(ˈkælsɪəm)
n
(Elements & Compounds) a malleable silvery-white metallic element of the alkaline earth group; the fifth most abundant element in the earth's crust (3.6 per cent), occurring esp as forms of calcium carbonate. It is an essential constituent of bones and teeth and is used as a deoxidizer in steel. Symbol: Ca; atomic no: 20; atomic wt: 40.078; valency: 2; relative density: 1.55; melting pt: 842±2°C; boiling pt: 1494°C
[C19: from New Latin, from Latin calx lime]

cal•ci•um

(ˈkæl si əm)

n.
a silver-white divalent metal, combined in limestone, chalk, etc., occurring also in animals in bone, shell, etc. Symbol: Ca; at. wt.: 40.08; at. no.: 20; sp. gr.: 1.55 at 20°C.
[1808; < Latin calc-, s. of calx lime, limestone + New Latin -ium -ium2]

cal·ci·um

(kăl′sē-əm)
Symbol Ca A silvery-white, moderately hard metallic element that is an alkaline-earth metal and occurs in minerals such as limestone and gypsum. It is a basic component of leaves, bones, teeth, and shells, and is essential for the normal growth and development of most animals and plants. Calcium is used to make plaster, cement, and alloys. Atomic number 20. See Periodic Table.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.calcium - a white metallic element that burns with a brilliant lightcalcium - 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
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
fluor, fluorite, fluorspar - a soft mineral (calcium fluoride) that is fluorescent in ultraviolet light; chief source of fluorine
gypsum - a common white or colorless mineral (hydrated calcium sulphate) used to make cements and plasters (especially plaster of Paris)
burnt lime, calcined lime, calcium oxide, calx, fluxing lime, quicklime, unslaked lime, lime - a white crystalline oxide used in the production of calcium hydroxide
limestone - a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
calcium ion, factor IV - ion of calcium; a factor in the clotting of blood
Translations
فِلِز الكِلْسكَالْسِيُوم
калций
vápník
calciumkalcium
kalcio
kaltsium
kalsium
kalcij
kalcium
kalsínkalsíum
カルシウム
칼슘
kalcis
kalcijs
calciu
vápnikvápník
kalcij
kalcium
แคลเซียม
canxi

calcium

[ˈkælsɪəm]
A. Ncalcio m
B. CPD calcium carbonate Ncarbonato m de calcio
calcium chloride Ncloruro m de calcio

calcium

[ˈkælsɪəm] ncalcium m

calcium

nKalzium nt, → Calcium nt

calcium

[ˈkælsɪəm] n (Chem) → calcio

calcium

(ˈkӕlsiəm) noun
an element of which one compound (calcium carbonate) forms limestone, chalk etc.

calcium

كَالْسِيُوم vápník calcium Kalzium ασβέστιο calcio kalsium calcium kalcij calcio カルシウム 칼슘 calcium kalsium wapń cálcio кальций kalcium แคลเซียม kalsiyum canxi

cal·ci·um

n. calcio, sustancia mineral necesaria en el desarrollo de los huesos y tejidos;
___ carbonatecarbonato cálcico.

calcium

n calcio; — carbonate carbonato cálcico or de calcio; — gluconate gluconato de calcio
References in periodicals archive ?
Calcium reabsorption is driven passively, paracellularly, as the lumen-positive voltage repels the positively charged calcium ions.
Their basic constituent is calcium carbonate--a white, insoluble compound formed from calcium ions secreted by the shellfish and carbonate ions present in seawater.
Radiation changes the flow of calcium ions within white blood cells and eventually triggers irreversible cell death.
Waxman's research suggests that nerve fibers die when calcium ions flow, in inappropriately large amounts, into nerve fibers.
Ingram's team found that when a plaque touches a cell, as well as positive calcium ions flooding in, negatively charged chloride ions flow out.
A: Until calcium ions are released from whatever they are attached to, which requires some form of acid, our bodies can't absorb them.
Significant adsorption of the surfactant also occurs on the fibers, but the fibers do not interact with the carboxylate and calcium ions in the same manner as the ink particles.
However, it is possible that EDTA might provide an economical and accelerated treatment in that the EDTA, a powerful chelating agent, might extract calcium ions from the calmodulin protein in the Giara cysts, thus killing them.
The system aims to bind calcium ions and prevent hard-water problems which can range from clogged plumbing to kidney stones.
The calcium ions result in cell contracture, which ruptures cell membranes and causes cell death.
Changes in migration of calcium ions to move toxins away from arthritic joints.
In separate experiments to test the hypothesis that calcium ions are mobilized from the shell in response to acidification, calcium ion concentration was measured in hemolymph from oysters held at 21 [degrees] C and 25 ppt salinity.