Breadcrumb Home > Dictionary > Index O OCS: Meaning and Definition of Find definitions for: OCS Pronunciation: [key] officer candidate school. Old Church Slavonic. outer continental shelf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ocreate oct- TrendingHere are the facts and trivia that people are buzzing about. The Book of 1 Corinthians: Summary Current Events This Week: June 2023 Languages Spoken in Each Country of the World Aesop's Fables: Aesop's Fables Milestones in Environmental Protection The 12 Labors of Hercules (In Order) ✖ Related Content Daily Word Quiz: ailurophobia Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language