permian period Permian • permic · · · Info · Definitions · Characters · · permian period · · Text Common · · Latin · · Scripts 14 · · Length 5 · · Syllables Definitions · · · (noun) from 280 million to 230 million years ago; reptiles. Synonyms: Permian, Permian period. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 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 r latin small letter r U+0072