/ Dictionary / Index M murine: Meaning and Definition of Find definitions for: mu•rine Pronunciation: (myoor'īn, -in), [key] — adj. belonging or pertaining to the Muridae, the family of rodents that includes the mice and rats. —n. a murine rodent. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: murine (Thesaurus) Murillo murine opossum Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language