permethrin

English dictionary entry

Meanings

noun
  1. A synthetic insecticide, C₂₁H₂₀Cl₂O₃, used to treat head lice, nits, and scabies; as an active ingredient in flea collars; and to eradicate woodworm infestations.

Word forms

permethrin permethrins

Etymology

From Latin perme(ō) (“to pervade”) + -thrin.

Derived words

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