/ Dictionary / Index M Medibank: Meaning and Definition of Find definitions for: Med•i•bank Pronunciation: (med'u-bangk"), [key] — n. the national health-insurance program instituted in Australia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mediatrix medic Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language