[1] : The Collaborative International Dictionary of English v.0.48

sodium \so"dium\, n. nl., fr.e. soda. chem.
   a common metallic element of the alkali group, in nature
   always occuring combined, as in common salt, in albite, etc.
   it is isolated as a soft, waxy, white, unstable metal, so
   highly reactive that it combines violently with water, and to
   be preserved must be kept under petroleum or some similar
   liquid. sodium is used combined in many salts, in the free
   state as a reducer, and as a means of obtaining other metals
   as magnesium and aluminium is an important commercial
   product. symbol na natrium. atomic weight 22.990.
   specific gravity 0.97.
   1913 webster

   sodium amalgam, an alloy of sodium and mercury, usually
      produced as a gray metallic crystalline substance, which
      is used as a reducing agent, and otherwise.

   sodium carbonate, a white crystalline substance,
      na2co3.10h2o, having a cooling alkaline taste, found in
      the ashes of many plants, and produced artifically in
      large quantities from common salt. it is used in making
      soap, glass, paper, etc., and as alkaline agent in many
      chemical industries. called also sal soda, washing
      soda, or soda. cf. sodium bicarbonate, and trona.
      

   sodium chloride, common, or table, salt, nacl.

   sodium hydroxide, a white opaque brittle solid, naoh,
      having a fibrous structure, produced by the action of
      quicklime, or of calcium hydrate milk of lime, on sodium
      carbonate. it is a strong alkali, and is used in the
      manufacture of soap, in making wood pulp for paper, etc.
      called also sodium hydrate, and caustic soda. by
      extension, a solution of sodium hydroxide.
      1913 webster
see also:
natrium sodium amalgam sodium carbonate na2co3.10h2o sal soda washing soda 
soda sodium bicarbonate trona sodium chloride nacl 
sodium hydroxide naoh sodium hydrate caustic soda 

[2] : The Collaborative International Dictionary of English v.0.48

natrium \na"trium\, n. nl. see natron. chem.
   the technical name for sodium.
   1913 webster
see also:
natron sodium 

Natrium >> N Words
Natrium, definition of term: Natrium
natrium_pag1.html

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