pyrethroid
/paɪˈriːθrɔɪd/
noun
- A synthetic chemical that mimics natural pyrethrin, used as an insecticide.
- Farmers often use pyrethroids to protect crops from beetles and caterpillars.
- Pyrethroids are common in commercial mosquito sprays because they are long-lasting.
- Some pet flea treatments contain a pyrethroid to kill ticks and fleas.