Breadcrumb Home > Dictionary > Index O OPA: Meaning and Definition of Find definitions for: OPA Pronunciation: [key] — U.S. Govt. U.S. Govt. Office of Price Administration: the federal agency (1941–46) charged with regulating rents and the distribution and prices of goods during World War II. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. op opacify TrendingHere are the facts and trivia that people are buzzing about. The Book of Philippians: Summary Current Events This Week: May 2023 Preamble of the United Nations Charter Queen Victoria Books of the Bible: New Testament Books in Order The 88 Recognized Constellations ✖ Related Content Daily Word Quiz: foison Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language