/ Dictionary / Index O Oval Office: Meaning and Definition of Find definitions for: O'val Of'fice Pronunciation: [key] the office of the president of the United States, located in the White House. this office regarded as the seat of executive power in the U.S. federal government. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oval of Cassini oval window Related Content Daily Word Quiz: benevolent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language