di·​az·​i·​non | \ dī-ˈa-zi-ˌnän How to pronounce diazinon (audio) \

Definition of diazinon

: a cholinesterase-inhibiting organophosphate insecticide C12H21N2O3PS

Examples of diazinon in a Sentence

Recent Examples on the Web Those pesticides included atrazine (26%), chlorpyrifos (59%), cypermethrin (49%), diazinon (60%), and permethrin (46%). Rebekah Tuchscherer, USA TODAY, 26 June 2019 By 1966, some of the critters had also evolved resistance to then-popular pesticides such as malathion, diazinon and fenthion. Rob Dunn, Discover Magazine, 16 Nov. 2018 Their exponential increase in the region comes suspiciously close to the Environmental Protection Agency’s ban on diazinon, a pesticide used to control various species of flies. Vinny Vella, Philly.com, 5 June 2018 Two of the children died after drinking a concentrated solution of the pesticide diazinon. Andrew Theen, OregonLive.com, 7 Apr. 2018 The city is required to cap the amount of bacteria, metals and the insecticide diazinon of the water body, which is state and federally recognized as impaired. Joshua Emerson Smith, sandiegouniontribune.com, 9 Aug. 2017 Similar results were shown for malathion and diazinon. Michael Biesecker, The Denver Post, 20 Apr. 2017 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'diazinon.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of diazinon

1957, in the meaning defined above

History and Etymology for diazinon

from Diazinon, a trademark

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The first known use of diazinon was in 1957

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Cite this Entry

“Diazinon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diazinon. Accessed 29 Jun. 2022.

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More Definitions for diazinon


Di·​az·​i·​non | \ dī-ˈaz-ə-ˌnän How to pronounce Diazinon (audio) \

Medical Definition of Diazinon

used for an organophosphate insecticide C12H21N2O3PS that is a cholinesterase inhibitor dangerous to humans if ingested


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