pyrethroid

noun

py·​re·​throid pī-ˈrē-ˌthrȯid How to pronounce pyrethroid (audio) -ˈre- How to pronounce pyrethroid (audio)
: any of various synthetic compounds that are related to the pyrethrins and resemble them in insecticidal properties
pyrethroid adjective

Examples of pyrethroid in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Iowa State said spraying pyrethroid insecticides such as Permethrin or Esfenvalerate on the outside of buildings when the beetles appear may help prevent pest entry, especially for large infestations. Jalen Williams, Detroit Free Press, 31 Oct. 2024 As another preemptive step, which may be easier than physically sealing gaps around your house, spray pyrethroid insecticides around any openings into the home. Maia Pandey, Journal Sentinel, 28 Oct. 2024 One case study linked an instance of facial paralysis in an infant with pyrethroid exposure. Lauren Leffer, Popular Science, 14 Aug. 2024 According to the county, the pesticide is an ultra-low volume spray of pyrethrin or pyrethroids, which is approved by the Environmental Protection Agency. Nollyanne Delacruz, The Mercury News, 26 July 2024 See all Example Sentences for pyrethroid 

Word History

Etymology

pyrethrin + -oid

First Known Use

1949, in the meaning defined above

Time Traveler
The first known use of pyrethroid was in 1949

Dictionary Entries Near pyrethroid

Cite this Entry

“Pyrethroid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pyrethroid. Accessed 30 Nov. 2024.

Medical Definition

pyrethroid

noun
: any of various synthetic compounds that are related to the pyrethrins and resemble them in insecticidal properties
pyrethroid adjective
Last Updated: - Updated example sentences
Love words? Need even more definitions?

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