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atom'ic weight'



Chem.
the average weight of an atom of an element, formerly based on the weight of one hydrogen atom taken as a unit or on 1/16 the weight of an oxygen atom, but after 1961 based on 1/12 the weight of the carbon-12 atom. Abbr.: at. wt.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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See also:
  • Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/atomic-weight.html on line 121 atomic weight (Thesaurus)
  • Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/atomic-weight.html on line 123 atomic weight (Encyclopedia)

 

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