/ Dictionary / Index M methyldopa: Meaning and Definition of Find definitions for: meth•yl•do•pa Pronunciation: (meth"ul-dō'pu), [key] — n. Pharm. a white powder, CHNO, used in the treatment of hypertension. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: methyldopa (Thesaurus) methylcyclohexanol methylene Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language