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

  • n. One mole of atoms of an element.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The amount of an element whose mass in grams is that of its atomic weight

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

  • n. the quantity of an element whose weight in grams is numerically equal to the atomic weight of the element


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