/ Dictionary / Index P per mensem*: Meaning and Definition of Find definitions for: per men•sem Pronunciation: (per men'sem Eng. p&schwar men's&schwam), [key] — Latin. Latin. by the month. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. permeate Permian Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language