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 \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
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, 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