/ Dictionary / Index M matutinal: Meaning and Definition of Find definitions for: ma•tu•ti•nal Pronunciation: (mu-tt'n-l, -tyt'-), [key] — adj. pertaining to or occurring in the morning; early in the day. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: matutinal (Thesaurus) maturity yield MATV Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language