/ Dictionary / Index M marginate: Meaning and Definition of Find definitions for: mar•gin•ate Pronunciation: (mär'ju-nāt"), [key] — adj., v., -at•ed, -at•ing. —adj. —v.t. to furnish with a margin; border. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. marginal utility margin call Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language