petty officer petty morel • petty spurge · · · Info · Definitions · Synonyms · Characters · · petty officer · · Text Common · · Latin · · Scripts 13 · · Length 5 · · Syllables Definitions · · · (noun) a noncommissioned officer in the Navy or Coast Guard with a rank comparable to sergeant in the Army. Synonyms: petty officer, PO, P.O.. · · Noun Definition 1 Synonyms · · · po · · Synonym 1 p.o. · · Synonym 2 Characters · · space U+0020 c latin small letter c U+0063 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079