Etymology
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paraquat (n.)

quick-acting herbicide, 1961, from para- (1) + first element in quaternary. So called in reference to its chemical configuration.

updated on October 03, 2012

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Definitions of paraquat from WordNet

paraquat (n.)
a poisonous yellow solid used in solution as a herbicide;
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.