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 camping gear with permethrin when possible.
—
Stephen Underwood, Hartford Courant, 12 June 2026
The Missouri Health Department also recommends treating clothes, boots and outdoors gear with permethrin per label instructions.
—Sophie Lindberg, Kansas City Star, 8 June 2026
The best approach combines chemical pesticide application, including picaridin or permethrin, with many of the natural methods of tick control mentioned above.
—Dan Simms, USA Today, 4 June 2026
Basically, tick tubes are cardboard tubes that have been filled with cotton that’s been treated with permethrin, a tick-killing chemical.
—Molly Burford, Southern Living, 2 June 2026
See All Example Sentences for permethrin
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Stephen Underwood, Hartford Courant, 12 June 2026
The Missouri Health Department also recommends treating clothes, boots and outdoors gear with permethrin per label instructions.
—Sophie Lindberg, Kansas City Star, 8 June 2026
The best approach combines chemical pesticide application, including picaridin or permethrin, with many of the natural methods of tick control mentioned above.
—Dan Simms, USA Today, 4 June 2026
Basically, tick tubes are cardboard tubes that have been filled with cotton that’s been treated with permethrin, a tick-killing chemical.
—Molly Burford, Southern Living, 2 June 2026
See All Example Sentences for permethrin
Cite this Entry
“Permethrin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/permethrin. Accessed 22 Jun. 2026.
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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