/ Dictionary / Index E ecumenicism: Meaning and Definition of Find definitions for: ec•u•men•i•cism Pronunciation: (ek"yoo-men'u-siz"um or, esp. Brit., ē"kyoo-), [key] — n. ecumenicalism; ecumenism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ecumenicism (Thesaurus) ecumenical patriarch ecumenicist Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language