gram-atomic mass
American Heritage Dictionary:
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gram-a·tom·ic mass
(grăm'ə-tŏm'ĭk)
n.
The mass of one mole of atoms of an element. Also called gram-atomic weight.
n.
The mass of one mole of atoms of an element. Also called gram-atomic weight.
gram-atomic weight, amount of an atomic substance whose weight, in grams, is numerically equal to the atomic weight of that substance. For example, 1 gram-atomic weight of atomic oxygen, O (atomic weight approximately 16), is 16 grams. See gram-molecular weight.
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American Heritage Dictionary
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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