Definition of permethrin in English:

permethrin

noun

  • A synthetic insecticide of the pyrethroid class, used chiefly against disease-carrying insects.

    • ‘Put bug spray with permethrin on your boots and clothes.’
    • ‘Spray your clothing with permethrin insecticide spray.’
    • ‘Experts consider permethrin the treatment of choice.’
    • ‘Pyrethrins and permethrin have a similar mode of activity.’
    • ‘Common treatments for head lice include permethrin and lindane.’

Origin

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

Pronunciation:

permethrin

/pərˈmēTHrin/