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

Treating clothing and gear with permethrin (a broad-spectrum insecticide and insect repellent). —Alyssa Hui, Verywell Health, 23 Feb. 2024

Items treated with permethrin can have effects that last for weeks or throughout several wash cycles. —Steven Rowe, Health, 28 Aug. 2023

And treating clothing and footwear with an insecticide called permethrin is highly effective. —Beth Teitell, BostonGlobe.com, 27 July 2023

Bedding and furniture need to be completely decontaminated, while medicines like permethrin are not the easiest to use. —David Cox, WIRED, 17 Jan. 2024

Repeat the cleaning process as needed, and the permethrin treatment one week later if your doctor recommends it. —Christin Perry, Parents, 10 Aug. 2023

However, permethrin can be dangerous if applied directly to the skin, so be careful not to spray yourself. —Steven Rowe, Health, 28 Aug. 2023

For longer lasting repellents to apply to your clothes, tent, and gear, products with permethrin can be very effective. —Steven Rowe, Health, 28 Aug. 2023

Treat your gear with permethrin, a powerful insecticide. —Colleen Stinchcombe, SELF, 2 Aug. 2023

Word History

Etymology

per- + methyl + pyrethrin

First Known Use

1975, in the meaning defined above

Medical Definition

permethrin

noun

per·​meth·​rin pər-ˈmeth-rən 

: a synthetic pyrethroid pesticide C₂₁H₂₀Cl₂O₃ used especially against insects, ticks, and mites