permethrin

The English word “permethrin” has 1 meaning listed here.

noun

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

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

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