/ Dictionary / Index L Lunar Orbiter: Meaning and Definition of Find definitions for: Lu'nar Or'biter Pronunciation: [key] — U.S. Aerospace. U.S. Aerospace. one of a series of space probes that orbited and photographed the moon in 1966 and 1967. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lunar month lunar rainbow Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language