heat flash heat fever • heat-forming · · · Info · Definitions · Characters · · heat flash · · Text Common · · Latin · · Scripts 10 · · Length 2 · · Syllables Definitions · · · (noun) a flash of intense heat (as released by an atomic explosion). Synonyms: heat flash. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 h latin small letter h U+0068 l latin small letter l U+006C s latin small letter s U+0073 t latin small letter t U+0074