/ Dictionary / Index M moonseed: Meaning and Definition of Find definitions for: moon•seed Pronunciation: (mn'sēd"), [key] — n. any climbing plant of the genus Menispermum, having greenish-white flowers and crescent-shaped seeds. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: moonseed (Thesaurus) moonscape moonset Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language