/ Dictionary / Index M ministerium: Meaning and Definition of Find definitions for: min•is•te•ri•um Pronunciation: (min"u-stēr'ē-um), [key] — n. an organization of local ministers or religious leaders who work with other community leaders on social or educational programs. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ministerial minister plenipotentiary Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language