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
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
Some mosquito nets are treated with permethrin, which provides more protection.6
When to Contact a Healthcare Provider
Bug bites can cause serious complications if not treated appropriately.
—Andrew Greenberg, Verywell Health, 12 Sep. 2024
The analysis identified anywhere from 2 to 11 different insecticides in each nest, including fipronil, which was present in 100% of the nests, and imidacloprid and permethrin in 89% of the nests.
—Grrlscientist, Forbes, 10 Mar. 2025
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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
Some mosquito nets are treated with permethrin, which provides more protection.6
When to Contact a Healthcare Provider
Bug bites can cause serious complications if not treated appropriately.
—Andrew Greenberg, Verywell Health, 12 Sep. 2024
The analysis identified anywhere from 2 to 11 different insecticides in each nest, including fipronil, which was present in 100% of the nests, and imidacloprid and permethrin in 89% of the nests.
—Grrlscientist, Forbes, 10 Mar. 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 20 May. 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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