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:
permethrinsOrigin 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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