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Wordnet 3.0

NOUN (1)

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]


The Collaborative International Dictionary of English v.0.48:

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]
WordNet (r) 3.0 (2006):

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]
The Elements (07Nov00):

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.
U.S. Gazetteer Places (2000):

Calcium, NY -- U.S. Census Designated Place in New York Population (2000): 3346 Housing Units (2000): 1134 Land area (2000): 5.586979 sq. miles (14.470208 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 5.586979 sq. miles (14.470208 sq. km) FIPS code: 11671 Located within: New York (NY), FIPS 36 Location: 44.034761 N, 75.842114 W ZIP Codes (1990): 13616 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Calcium, NY Calcium