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paraquat Line breaks: para|quat
Pronunciation: /ˈparəkwɒt/

Definition of paraquat in English:


[mass noun]
A toxic fast-acting herbicide, which becomes deactivated in the soil.
Example sentences
  • The Rochester team studied the effects of a mixture of two common agrochemicals, the herbicide paraquat and the fungicide maneb.
  • To date, epidemiological and animal studies have linked some cases to high exposure to various pesticides, herbicides and fungicides, including paraquat and maneb.
  • This is in considerable contrast to the large, technologized ‘zeroshade’ cacao plantations, which apply generous amounts of highly toxic herbicides, such as paraquat, and potent insecticides such as endosulfan.


1960s: from para-1 (sense 2) + quaternary (it is a quaternary ammonium salt containing pyridine rings linked at the para-position).

Definition of paraquat in:
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