tepp

Chemistry.

1. tetraethyl pyrophosphate.

noun Chemistry.

1. a colorless to amber, hygroscopic, poisonous liquid, (C2H5)4P2O7, used as an insecticide and as a rodenticide.

n.

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

n.

1. TEPP.