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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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atom smasher
at·om smash·er (plural at·om smash·ers)


noun 
Definition:
 
particle accelerator: a device that speeds up subatomic particles ( informal )

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