from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Plural form of permethrin.


Sorry, no etymologies found.


  • A number of over-the-counter treatments are available for exterminating lice, though there is a growing concern that the creatures are becoming resistant to common remedies like permethrins (which are in the product Nix) and pyrethrins (carried in R&C and Rid).

    Glenn D. Braunstein, M.D.: Nitpicking the Lousy Facts on Head Lice


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