Meaning of ATOM BOMB

Pronunciation:			'atum bâm
WordNet Dictionary
	Definition:		[n]  a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element (uranium 235 or plutonium 239)) [v]  bomb with atomic weapons
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	Synonyms:		A-bomb, atomic bomb, fission bomb, nuke, plutonium bomb
	See Also:		bomb, bombard, neutron bomb, nuclear weapon