/ Dictionary / Index O OECD: Meaning and Definition of Find definitions for: OECD Pronunciation: [key] Organization for Economic Cooperation and Development. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oe oecumenical 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