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diquat

[ dahy-kwot ]

noun

  1. a yellow crystalline substance, C 12 H 12 Br 2 N 2 , used as a selective postemergence herbicide to control weeds on noncrop land and for aquatic weed control.


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Word History and Origins

Origin of diquat1

First recorded in 1955–60; di- 1 + quat(ernary)

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diquarkdir.