/ Dictionary / Index O Oak Ridge: Meaning and Definition of Find definitions for: Oak' Ridge' Pronunciation: [key] a city in E Tennessee, near Knoxville: atomic research center. 27,662. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Oak Park oak-root rot Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language