permethrin
noun
per·meth·rin
(ˌ)pər-ˈme-thrən 
: a synthetic pyrethroid C21H20Cl2O3 used especially as an insecticide
Examples of permethrin in a Sentence
Recent Examples on the Web
Treat outdoor clothing with permethrin, a chemical similar to chrysanthemum extracts that stops ticks from biting.
—
Pien Huang, NPR, 23 June 2025
Clothing impregnated with permethrin is another option.
—Arricca Elin Sansone, Southern Living, 11 May 2025
This No Fly Zone button-down top is cleverly designed to repel insects with permethrin, a skin-safe chemical that mimics the natural extracts of the naturally bug-repelling chrysanthemum flower.
—Olivia Young, Travel + Leisure, 29 Apr. 2025
Some health organizations say more scientific research should be done on the impacts of long-term or high-concentrated exposures to permethrin, especially for crew members.
—Kathleen Wong, USA Today, 17 Apr. 2025
See All Example Sentences for permethrin
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Pien Huang, NPR, 23 June 2025
Clothing impregnated with permethrin is another option.
—Arricca Elin Sansone, Southern Living, 11 May 2025
This No Fly Zone button-down top is cleverly designed to repel insects with permethrin, a skin-safe chemical that mimics the natural extracts of the naturally bug-repelling chrysanthemum flower.
—Olivia Young, Travel + Leisure, 29 Apr. 2025
Some health organizations say more scientific research should be done on the impacts of long-term or high-concentrated exposures to permethrin, especially for crew members.
—Kathleen Wong, USA Today, 17 Apr. 2025
See All Example Sentences for permethrin
Cite this Entry
“Permethrin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/permethrin. Accessed 1 Jul. 2025.
Copy CitationMedical Definition
permethrin
noun
per·meth·rin
pər-ˈmeth-rən
: a synthetic pyrethroid pesticide C21H20Cl2O3 used especially against insects, ticks, and mites
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