/ Dictionary / Index M medium of exchange: Meaning and Definition of Find definitions for: me'dium of exchange' Pronunciation: [key] anything generally accepted as representing a standard of value and exchangeable for goods or services. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. medium octavo medium quarto Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language