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relative atomic mass

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noun

the ratio of the average mass per atom of the naturally occurring form of an element to one-twelfth the mass of an atom of carbon-12Symbol: A r Abbreviation: r.a.m. Former name: atomic weight

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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for relative atomic mass

relative atomic mass
[ rĕlə-tĭv ]

See atomic weight.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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