/ Dictionary / Index T tropaeolin: Meaning and Definition of Find definitions for: tro•pae•o•lin Pronunciation: (trō-pē'u-lin), [key] — n. Chem. any of a number of orange or yellow azo dyes of complex molecular structure. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trop* tropaeolin D Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language