atomic physics atomic number 99 • atomic pile · · · Info · Definitions · Synonyms · Characters · · atomic physics · · Text Common · · Latin · · Scripts 14 · · Length 5 · · Syllables Definitions · · · (noun) the branch of physics that studies the internal structure of atomic nuclei. Synonyms: nuclear physics, atomic physics, nucleonics. · · Noun Definition 1 Synonyms · · · nuclear physics · · Synonym 1 nucleonics · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D o latin small letter o U+006F p latin small letter p U+0070 s latin small letter s U+0073 t latin small letter t U+0074 y latin small letter y U+0079