: a hygroscopic corrosive liquid organophosphate C8H20O7P2 that is a powerful anticholinesterase and is used especially as an insecticide

Word History

Etymology

tetra- + ethyl + pyrophosphate

First Known Use

1948, in the meaning defined above

Time Traveler
The first known use of TEPP was in 1948

Dictionary Entries Near TEPP

Cite this Entry

“TEPP.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/TEPP. Accessed 14 Nov. 2024.

Medical Definition

: a mobile hygroscopic corrosive liquid organophosphate C8H20O7P2 that is a powerful anticholinesterase and is used as an insecticide and parasympathomimetic agent

called also tetraethyl pyrophosphate

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!