Definition of permethrin in English:


Syllabification: per·meth·rin
Pronunciation: /pərˈmēTHrin


  • A synthetic insecticide of the pyrethroid class, used chiefly against disease-carrying insects.
    More example sentences
    • Pyrethrins and permethrin have a similar mode of activity.
    • Common treatments for head lice include permethrin and lindane.
    • Spray your clothing with permethrin insecticide spray.


1970s: from per- ( sense 2) + (res)methrin, denoting a synthetic pyrethroid.

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Pronunciation: skəʊʃ
a small amount; a little