[ in-dohl ]

  1. a colorless to yellowish solid, C8H7N, having a low melting point and a fecal odor, found in the oil of jasmine and clove and as a putrefaction product from animals' intestines: used in perfumery and as a reagent.

Origin of indole

First recorded in 1865–70; ind- + -ole2

Words Nearby indole Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use indole in a sentence

British Dictionary definitions for indole


indol (ˈɪndəʊl, -dɒl)

/ (ˈɪndəʊl) /

  1. a white or yellowish crystalline heterocyclic compound extracted from coal tar and used in perfumery, medicine, and as a flavouring agent; 1-benzopyrrole. Formula: C 8 H 7 N

Origin of indole

C19: from ind (igo) + -ole 1

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for indole


[ ĭndōl′ ]

  1. A white crystalline compound obtained from coal tar or various plants and produced by the bacterial decomposition of tryptophan in the intestine. It is used in the perfume industry and as a reagent. Chemical formula: C8H7N.

  2. Any of various derivatives of this compound.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.