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atom'ic bomb'




1. a bomb whose potency is derived from nuclear fission of atoms of fissionable material with the consequent conversion of part of their mass into energy.
2. a bomb whose explosive force comes from a chain reaction based on nuclear fission in U-235 or plutonium. Also,atom bomb.Also called A-bomb, fission bomb.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

atomic ageatomic clock
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