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, "Study finds residue of pesticides, antibiotics and growth hormone in non-organic milk," 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, "Our Attempts to Eradicate Insects are Just Making them Resistant to Pesticides," 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, "$90,000 state grant to help study infestation of Chesco mushroom flies," 5 June 2018 Two of the children died after drinking a concentrated solution of the pesticide diazinon. Andrew Theen, OregonLive.com, "Family killings in Oregon and Southwest Washington through the years," 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, "Under pressure from regulators, San Diego cracks down on water pollution from construction sites," 9 Aug. 2017 Similar results were shown for malathion and diazinon. Michael Biesecker, The Denver Post, "Dow Chemical tries to kill pesticide risk study," 20 Apr. 2017

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.

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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.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/diazinon. Accessed 21 January 2020.

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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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Rhyming Dictionary: Words that rhyme with diazinon

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