fission bomb fission alga • fission fungus · · · Info · Definitions · Synonyms · Characters · · fission bomb · · Text Common · · Latin · · Scripts 12 · · Length 3 · · Syllables Definitions · · · (noun) a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239). Synonyms: atom bomb, atomic bomb, A-bomb, fission bomb, plutonium bomb. · · Noun Definition 1 Synonyms · · · atom bomb · · Synonym 1 atomic bomb · · Synonym 2 a-bomb · · Synonym 3 plutonium bomb · · Synonym 4 Characters · · space U+0020 b latin small letter b U+0062 f latin small letter f U+0066 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073