/ Dictionary / Index M major medical: Meaning and Definition of Find definitions for: ma'jor med'ical Pronunciation: [key] insurance designed to compensate for particularly large medical expenses due to a severe or prolonged illness, usually by paying a high percentage of medical bills above a certain amount. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. major-leaguer major mode Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language