h-bomb hb • hcfc · · · Info · Definitions · Synonyms · Characters · · h-bomb · · Text Common · · Latin · · Scripts 6 · · Length 1 · · Syllables Definitions · · · (noun) a nuclear weapon that releases atomic energy by union of light (hydrogen) nuclei at high temperatures to form helium. Synonyms: hydrogen bomb, H-bomb, fusion bomb, thermonuclear bomb. · · Noun Definition 1 Synonyms · · · hydrogen bomb · · Synonym 1 fusion bomb · · Synonym 2 thermonuclear bomb · · Synonym 3 Characters · · - hyphen-minus U+002D b latin small letter b U+0062 h latin small letter h U+0068 m latin small letter m U+006D o latin small letter o U+006F