permethrin

Fetched 2026-10-26 (cache).

Synonyms: pyrethrin, resmethrin, cypermethrin

Antonyms: pyrethrin, resmethrin, cypermethrin

Related words from Datamuse; suggestions, not definitions.

Noun

1. A synthetic [[insecticide]], C₂₁H₂₀Cl₂O₃, used to treat [[head louse|head lice]], [[nit]]s, and [[scabies]]; as an active ingredient in [[flea collar]]s; and to eradicate [[woodworm]] infestations.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.