/ Dictionary / Index O orrery: Meaning and Definition of Find definitions for: or•rer•y Pronunciation: (ôr'u-rē, or'-), [key] — pl. -rer•ies. an apparatus for representing the positions, motions, and phases of the planets, satellites, etc., in the solar system. any of certain similar machines, as a planetarium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: orrery (Thesaurus) orra Orrin Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language