di·​az·​i·​non dī-ˈa-zi-ˌnän How to pronounce diazinon (audio)
: a cholinesterase-inhibiting organophosphate insecticide C12H21N2O3PS

Examples of diazinon in a Sentence

Recent Examples on the Web By 1966, some of the critters had also evolved resistance to then-popular pesticides such as malathion, diazinon and fenthion. Rob Dunn, Discover Magazine, 15 Nov. 2018 Those pesticides included atrazine (26%), chlorpyrifos (59%), cypermethrin (49%), diazinon (60%), and permethrin (46%). Rebekah Tuchscherer, USA TODAY, 26 June 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'diazinon.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


from Diazinon, a trademark

First Known Use

1957, in the meaning defined above

Time Traveler
The first known use of diazinon was in 1957

Dictionary Entries Near diazinon

Cite this Entry

“Diazinon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diazinon. Accessed 3 Mar. 2024.

Medical Definition


Di·​az·​i·​non dī-ˈaz-ə-ˌnän How to pronounce Diazinon (audio)
used for an organophosphate insecticide C12H21N2O3PS that is a cholinesterase inhibitor dangerous to humans if ingested
Love words? Need even more definitions?

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