/veuh nil"in, van"l-/ , n. Chem.
a white, crystalline, water-soluble, alcohol-soluble solid, C 8 H 8 O 3 , obtained by extraction from the vanilla bean or prepared synthetically: used chiefly as a flavoring agent and in perfumery.
Also, vanilline /veuh nil"in, -een, van"l in, -een'/ . Also called vanillic aldehyde .
[ 1865-70; VANILL(A) + -IN 2 ]