azad·​i·​rach·​tin ə-ˌza-də-ˈrak-tən How to pronounce azadirachtin (audio)
plural azadirachtins
: a chemical compound C35H44O16 that occurs in the seeds of the neem tree (Azadirachta indica) and is used as an insecticide
Most of neem's pesticidal punch comes from the compound azadirachtin, which disrupts insects' growth as well as dampening their appetite.Leslie Land, New York Times, 10 May 2007
Azadirachtin causes hormonal imbalances and disrupts the maturation cycle in insects, which results in unsuccessful molts, or heavily deformed immature insect stages.Illinois Blasdel, Landscape Management, April 2005

Word History

First Known Use

1971, in the meaning defined above

Time Traveler
The first known use of azadirachtin was in 1971

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Cite this Entry

“Azadirachtin.” Dictionary, Merriam-Webster, Accessed 21 May. 2024.

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