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atomic veteran
atomic weight
atomicity
atomise, etc
atomism
atomize
atomizer
atomy
atonal
atonalism
atonality
atone
atonement
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atomic mass
a·tom·ic mass (plural a·tom·ic mass·es)


noun 
Definition:
 
physics 
Same as  relative atomic mass
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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