/ Dictionary / Index G gentianaceous: Meaning and Definition of Find definitions for: gen•ti•a•na•ceous Pronunciation: ( jen"shē-u-nā'shus), [key] — adj. belonging to the plant family Gentianaceae. Cf. gentian family. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gentian gentian family 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