/ Dictionary / Index O orison: Meaning and Definition of Find definitions for: or•i•son Pronunciation: (ôr'u-zun, or'-), [key] — n. a prayer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: orison (Thesaurus) orismology Orissa Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language