/ Dictionary / Index O orbiter: Meaning and Definition of Find definitions for: or•bit•er Pronunciation: (ôr'bi-tur), [key] — n. U.S. Aerospace. Also calledthe crew- and payload-carrying component of the space shuttle. a space probe designed to orbit a planetary body or moon. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: orbiter (Thesaurus) orbital velocity Orbiting Astronomical Observatory Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language