/ Dictionary / Index M mediacy: Meaning and Definition of Find definitions for: me•di•a•cy Pronunciation: (mē'dē-u-sē), [key] — n. the state of being mediate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mediacy (Thesaurus) media center mediad Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language