atomic mass
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atomic mass
n.
The mass of an atom, usually expressed in atomic mass units.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
atomic mass
n
1. (Chemistry) the mass of an isotope of an element in atomic mass units
2. (Chemistry) short for relative atomic mass See atomic weight
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
atom′ic mass′
n.
the mass of an isotope of an element measured in units based on 1/12 the mass of the carbon-12 atom. Abbr.: at. m.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
atomic mass
The mass of a given atom or molecule, expressed in atomic mass units. Compare atomic weight.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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| Noun | 1. |  atomic mass - (chemistry) the mass of an atom of a chemical element expressed in atomic mass unitsmass - the property of a body that causes it to have weight in a gravitational field combining weight, eq, equivalent weight, equivalent - the atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is 8 for oxygen meq, milliequivalent - one-thousandth of an equivalent chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions |
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Translations
atomic mass
n (Chem) → massa atomicaCollins Italian Dictionary 1st Edition © HarperCollins Publishers 1995