Meaning of FISSION BOMB

Pronunciation:			'fishun 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))
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	Synonyms:		A-bomb, atom bomb, atomic bomb, plutonium bomb
	See Also:		neutron bomb, nuclear weapon