IPA: //vəˈnɪlɪn//
KK: /væˈnɪlɪn/
A compound that has a sweet smell and flavor, commonly found in vanilla beans and used in food, perfumes, and medicines.
The cake was flavored with vanillin to give it a rich vanilla taste.
Vanillin is derived from 'vanilla' (from Spanish 'vainilla', meaning little pod) and the suffix '-in' (used in chemistry to denote substances). The word 'vanillin' refers to the compound derived from the vanilla bean, which gives it its characteristic flavor and aroma.
Think of 'vanilla' as the source of the flavor, and remember that 'vanillin' is the specific compound that gives vanilla its unique taste.