/ Dictionary / Index M mangosteen: Meaning and Definition of Find definitions for: man•go•steen Pronunciation: (mang'gu-stēn"), [key] — n. the juicy, edible fruit of an East Indian tree, Garcinia mangostana. the tree itself. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mangosteen (Thesaurus) mangonel mangrove 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