/ Dictionary / Index O org.: Meaning and Definition of Find definitions for: org. Pronunciation: [key] organic. organization. organized. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Orff organ Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language