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atmospheric
atmospheric pressure
atmospherics
ATOL
atole
atoll
atom
atom bomb
atom smasher
atomic
atomic absorption spectroscopy
Atomic Age
atomic bomb
atomic clock
atomic cocktail
atomic demolition munition
atomic emission spectroscopy
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atomic physics
a·tom·ic phys·ics


noun 
Definition:
 
study of atomic interactions: the physics of elementary particles and their interactions and processes ( takes a singular verb )

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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