/ Dictionary / Index M minoxidil: Meaning and Definition of Find definitions for: min•ox•i•dil Pronunciation: (mi-nok'si-dil"), [key] — n. Pharm. a potent peripheral vasodilator used in the treatment of severe hypertension, also applied topically to promote hair growth in some types of baldness. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: minoxidil (Thesaurus) Minotaur Minsk Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language