/ Dictionary / Index G gynostegium: Meaning and Definition of Find definitions for: gyn•o•ste•gi•um Pronunciation: ( jin"u-stē'jē-um, gī"nu-, jī"-), [key] — pl. -gi•a a specialized caplike mass of tissue covering a gynoecium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gynostegium (Thesaurus) gynophore gynostemium Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language