subatomic particle subatomic • subattenuate · · · Info · Definitions · Synonyms · Characters · · subatomic particle · · Text Common · · Latin · · Scripts 18 · · Length 7 · · Syllables Definitions · · · (noun) a body having finite mass and internal structure but negligible dimensions. Synonyms: particle, subatomic particle. · · Noun Definition 1 Synonyms · · · particle · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075