/ Dictionary / Index V vanillin: Meaning and Definition of Find definitions for: va•nil•lin Pronunciation: (vu-nil'in, van'l-), [key] — n. Chem. a white, crystalline, water-soluble, alcohol-soluble solid, CHO, obtained by extraction from the vanilla bean or prepared synthetically: used chiefly as a flavoring agent and in perfumery. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: vanillin (Thesaurus) vanillic Vanir Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language