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paraquat

Syllabification: par·a·quat
Pronunciation: /ˈparəˌkwät
 
/

Definition of paraquat in English:

noun

A toxic, fast-acting herbicide that 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.

Origin

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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