calcium

4 definitions found

calcium - 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]

calcium - WordNet (r) 2.1 (2005) :

  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 (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.
  

calcium - U.S. Gazetteer (1990) :

  Calcium, NY (CDP, FIPS 11671)
    Location: 44.03470 N, 75.84798 W
    Population (1990): 2465 (894 housing units)
    Area: 14.5 sq km (land), 0.0 sq km (water)
    Zip code(s): 13616