Breadcrumb Home > Dictionary > Index O OGO: Meaning and Definition of Find definitions for: OGO Pronunciation: [key] — U.S. Aerospace. U.S. Aerospace. Orbiting Geophysical Observatory: one of a series of scientific satellites that studied sun-earth relationships and the earth's atmosphere, ionosphere, and magnetosphere. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ogmios ogonek TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: insipid Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language