from The American Heritage® Dictionary of the English Language, 4th Edition

  • The symbol for the element sodium.
  • abbr. Bible Nahum

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Symbol for sodium.

from the GNU version of the Collaborative International Dictionary of English

  • No, not. See no.

from The Century Dictionary and Cyclopedia

  • An obsolete or dialectal (Scotch) form of no.
  • In chem., the symbol for sodium (NL. natrium).
  • An abbreviation of National Academy of Design.
  • An abbreviaton of National Academy of Sciences.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt)


From New Latin natrium, from French natron, natron; see natron.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin natrium. (Wiktionary)



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