/ Dictionary / Index E ecclesiasticism: Meaning and Definition of Find definitions for: ec•cle•si•as•ti•cism Pronunciation: (i-klē"zē-as'tu-siz"um), [key] — n. ecclesiastical principles, practices, or spirit. devotion, esp. excessive devotion, to the principles or interests of the church. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ecclesiasticism (Thesaurus) ecclesiastical society Ecclesiasticus Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language