Definition of malathion in English:

malathion

noun

  • [mass noun] A synthetic organophosphorus compound which is used as an insecticide.

    • ‘It is not known whether children are more sensitive to the effects of malathion than adults.’
    • ‘The alcohol in malathion lotion and the terpenoids may cause stinging.’
    • ‘It is not likely that malathion will cause reproductive effects in humans under normal circumstances.’
    • ‘Nearly all of the streams in urban areas contained insecticides commonly used on lawns, such as diazinon and malathion.’
    • ‘Recommended chemical treatments include such common insecticides as permethrin, malathion, diazinon and sevin.’

Origin

1950s: from ( diethyl) mal(eate) (see maleic acid)+ thio- + -on.

Pronunciation:

malathion

/ˌmaləˈθʌɪən/