/ Dictionary / Index P Permian: Meaning and Definition of Find definitions for: Per•mi•an Pronunciation: (pûr'mē-un), [key] — adj. noting or pertaining to a period of the Paleozoic Era occurring from about 280 to 230 million years ago and characterized by a profusion of amphibian species. See table under —n. the Permian Period or System. Permic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: permian (Thesaurus) per mensem* Permic Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language