/ Dictionary / Index M Marsilid: Meaning and Definition of Find definitions for: Mar•si•lid Pronunciation: (mär'su-lid), [key] — Pharm., Trademark. Pharm.,Trademark. a brand of iproniazid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. marshy Marsilius of Padua Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language