/ Dictionary / Index M marconigram: Meaning and Definition of Find definitions for: mar•co•ni•gram Pronunciation: (mär-kō'ni-gram"), [key] — n. Older Use. a radiogram. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Marconi Marconi mast Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language