/ Dictionary / Index M mariner: Meaning and Definition of Find definitions for: mar•i•ner Pronunciation: (mar'u-nur), [key] — n. a person who directs or assists in the navigation of a ship; sailor. (cap.)one of a series of U.S. space probes that obtained scientific information while flying by or orbiting around the planets Mars, Mercury, and Venus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mariner (Thesaurus) marine league marine railway Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language