Definition of pyrethroid in English:

pyrethroid

noun

Chemistry
  • A pyrethrin or related insecticidal compound:

    ‘don't confuse it with pyrethroids such as permethrin’
    [as modifier] ‘pyrethroid insecticides’
    • ‘In general, compounds known as pyrethroids and neonicotinoids were the best performers, according to the researchers.’
    • ‘The other insecticides are pyrethroids and should not be incorporated.’
    • ‘The three types of pesticide used in preparations are organophosphates, carbamate and pyrethroids.’
    • ‘Many of these are again pesticides such as compounds of organophosphorous, pyrethroids or carbamate.’
    • ‘We subjected these vectors to larval bioassay using two popular pyrethroids viz deltamethrin and permethrin.’

Pronunciation

pyrethroid

/pʌɪˈriːθrɔɪd/