pyrethroid

noun
py·​re·​throid | \ pī-ˈrē-ˌthrȯid How to pronounce pyrethroid (audio) , -ˈre- How to pronounce pyrethroid (audio) \

Definition of pyrethroid

: any of various synthetic compounds that are related to the pyrethrins and resemble them in insecticidal properties

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Other Words from pyrethroid

pyrethroid adjective

Examples of pyrethroid in a Sentence

Recent Examples on the Web

According to a 2018 report by ABC News, bug sprays contain active ingredients called pyrethroids, which penetrate the insect’s nervous system to stun and kill them. Samantha Lauriello, Health.com, "What Is Wasping? What You Need to Know About This Dangerous Form of Substance Abuse," 17 July 2019 According to LiveScience, bug sprays contain an active ingredient called pyrethroids that interferes with nerve signaling in humans. Leada Gore | Lgore@al.com, al.com, "Wasp spray used as meth alternative, police warn," 17 July 2019 The Bug Squad recommends using a synthetic pyrethroid spray to kill these pests in your home. Elizabeth Gulino, House Beautiful, "Beware of ‘Kissing Bugs’ This Season—They Can Potentially Cause a Deadly Illness," 25 Apr. 2019 Pyrethrins and pyrethroids also work by interfering with sodium pores. Karen Weintraub, Scientific American, "Revenge of the Super Lice," 1 June 2017 When pyrethroids were introduced into Israel in the early 1990s, just one treatment would destroy all the adult lice on an individual within a few weeks. Karen Weintraub, Scientific American, "Revenge of the Super Lice," 1 June 2017 Bug spray has high concentrations of a compound called pyrethroids. Dana Dovey, Newsweek, "What Is Katie? Drugs Mixed With Bug Spray Create Dangerous, Zombie-Like High," 21 Mar. 2018 Raid’s active ingredients, pyrethroids, are generally considered to be safe in small exposures, Rusyniak said. Robert Scheer, Indianapolis Star, "'Think what it’s doing to your brain': Using bug spray to get high," 18 Mar. 2018 Bifenthrin (a pyrethroid): Talstar; Bifenthrin, Ortho Home Defense and other brands. Dan Gill, NOLA.com, "How to spot, prevent and control sob webworms in your lawn," 29 July 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pyrethroid.' 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 pyrethroid

1949, in the meaning defined above

History and Etymology for pyrethroid

pyrethrin + -oid

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Time Traveler for pyrethroid

The first known use of pyrethroid was in 1949

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More Definitions for pyrethroid

pyrethroid

noun
py·​re·​throid | \ pī-ˈrē-ˌthrȯid How to pronounce pyrethroid (audio) , -ˈreth-ˌrȯid How to pronounce pyrethroid (audio) \

Medical Definition of pyrethroid

: any of various synthetic compounds that are related to the pyrethrins and resemble them in insecticidal properties

Other Words from pyrethroid

pyrethroid adjective

Comments on pyrethroid

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