1. Noun.  (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.
  2. Noun.  (chemistry) Any of the derivatives of indole1.

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This entry was last updated on RefTopia from its source on 3/20/2012.