post exchange postethmoid • postexilian · · · Info · Definitions · Synonyms · Characters · · post exchange · · Text Common · · Latin · · Scripts 13 · · Length 3 · · Syllables Definitions · · · (noun) a commissary on a United States Army post. Synonyms: post exchange, PX. · · Noun Definition 1 Synonyms · · · px · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 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 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 t latin small letter t U+0074 x latin small letter x U+0078