a white, crystalline compound, CHN, obtained from indigo and other sources and formed as a product of the intestinal putrefaction of proteins: it is used in perfumery, as a reagent, etc.
Origin of indole; from indigo + phenol
- A white crystalline compound, C8H7N, obtained from coal tar or various plants and produced by the bacterial decomposition of tryptophan in the intestine. It is used in perfumes and as a reagent.
- Any of various derivatives of this compound.
Origin of indoleind(igo) + –ole.
- (chemistry) An organic compound, C8H7N, found in coal tar, and produced in the gut by the bacterial decomposition of tryptophan; it is an aromatic bicyclic heterocycle having a benzene ring fused with a pyrrole ring; indole and its derivatives occur widely in nature and have many industrial applications.
- (chemistry) Any of the derivatives of indole1.