vanillin Syllabification: (va·nil·lin)Pronunciation: /vəˈnilin, ˈvanl-/Definition of vanillin noun Chemistry a fragrant compound that is the essential constituent of vanilla. Alternative name: 3-methoxy-4-hydroxybenzaldehyde; chemical formula: CH3OC6H3(OH)CHO Origin: mid 19th century: from vanilla + -in1vanillin in other Oxford dictionaries Definition of vanillin in the British & World English dictionary
