/ Dictionary / Index G gynostemium: Meaning and Definition of Find definitions for: gyn•o•ste•mi•um Pronunciation: ( jin"u-stē'mē-um, gī"nu-, jī"-), [key] — pl. -mi•a the united stamens and pistil of an orchid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gynostegium -gynous Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language