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  1. tetraethyl pyrophosphate.

tetraethyl pyrophosphate

noun Chemistry.
  1. a colorless to amber, hygroscopic, poisonous liquid, (C2H5)4P2O7, used as an insecticide and as a rodenticide.
Also called TEPP
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for tepp

Historical Examples

  • TEPP which is teta ethyl pyrophosphate is a very quick acting material but doesn't last.

    Northern Nut Growers Association Report of the Proceedings at the Forty-Second Annual Meeting

    Northern Nut Growers Association

tepp in Medicine


  1. Tetraethyl pyrophosphate; a crystalline organophosphorus compound that inhibits the action of acetylcholinesterase and is used as a stimulant of the parasympathetic nervous system.

tetraethyl pyrophosphate

  1. TEPP.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.