Definition of diquat in English:


Syllabification: di·quat
Pronunciation: /ˈdīˌkwät


  • A synthetic compound used in controlling plant growth, often as a nonpersistent contact herbicide.
    • A bromide of a quaternary amine; chemical formula: (C5H4NCH2)2Br2
    More example sentences
    • Victor Oreffo (AstraZeneca, Loughborough, UK) presented results on gene expression analysis following in vivo or in vitro exposure to the oxidative stress agents menadione and diquat.
    • Cost of treating hydrilla with diquat or Sonar is about $1, 000 an acre.
    • EPA has found diquat to potentially cause the following health effects.


1960s: from di-1 'two' + quaternary.

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