What is pertaining to, or derived from, vanilla or vanillin; resembling vanillin; specifically, designating an alcohol and an acid respectively, vanillin being the intermediate aldehyde called?

vanillic — Pertaining to, or derived from, vanilla or vanillin; resembling vanillin; specifically, designating an alcohol and an acid respectively, vanillin being the intermediate aldehyde. (Webster's 1913.)

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