pi-meson pimento tree • pimgenet · · · Info · Definitions · Synonyms · Characters · · pi-meson · · Text Common · · Latin · · Scripts 8 · · Length 3 · · Syllables Definitions · · · (noun) a meson involved in holding the nucleus together; produced as the result of high-energy particle collision. Synonyms: pion. · · Noun Definition 1 Synonyms · · · pion · · Synonym 1 Characters · · - hyphen-minus U+002D e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 s latin small letter s U+0073