Permethrin Definition

pər-mĕthrĭn
noun
A topical insecticide, C21 H20 CL2 O3 , used to treat head lice and nits, scabies, and various species of ticks.
American Heritage

Other Word Forms of Permethrin

Noun

Singular:
permethrin
Plural:
permethrins

Origin of Permethrin

  • per– (res)methrin a pyrethroid (resm- of unknown origin) ((pyr)ethrin)

    From American Heritage Dictionary of the English Language, 5th Edition

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permethrin