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4 definitions found
 for Calcium
From 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]

From 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]

From 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.
  

From 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
  

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