/ Dictionary / Index O OMB: Meaning and Definition of Find definitions for: OMB Pronunciation: [key] — U.S. Govt. U.S. Govt. Office of Management and Budget: the division of the Executive Office of the President that prepares and administers the federal budget and improves management in the executive branch. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: omb (Thesaurus) Omayyad OMBE Related Content Daily Word Quiz: supercilious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language