high energy physics high-energy • high-energy physics · · · Info · Definitions · Synonyms · Characters · · high energy physics · · Text Common · · Latin · · Scripts 19 · · Length 6 · · Syllables Definitions · · · (noun) the branch of physics that studies subatomic particles and their interactions. Synonyms: particle physics, high-energy physics, high energy physics. · · Noun Definition 1 Synonyms · · · particle physics · · Synonym 1 high-energy physics · · Synonym 2 Characters · · space U+0020 c latin small letter c U+0063 e latin small letter e U+0065 g latin small letter g U+0067 h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 y latin small letter y U+0079