/ Dictionary / Index S sinningia: Meaning and Definition of Find definitions for: sin•nin•gi•a Pronunciation: (si-nin'jē-u), [key] — n. any of various tropical American plants belonging to the genus Sinningia, of the gesneria family, including the gloxinia and other species cultivated as houseplants for their variously colored flowers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sinningia (Thesaurus) Sinn Fein sino- 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