/ Dictionary / Index M marigraph: Meaning and Definition of Find definitions for: mar•i•graph Pronunciation: (mar'i-graf", -gräf"), [key] — n. a device that automatically registers the rise and fall of the tide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. marigram marijuana 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