/ Dictionary / Index O oecus: Meaning and Definition of Find definitions for: oe•cus Pronunciation: (ē'kus), [key] — pl. oe•ci (in an ancient Roman house) an apartment, esp. a dining room, decorated with columns. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oecumenical OED Related Content Daily Word Quiz: overture Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language