paraquat

noun
para·​quat | \ˈper-ə-ˌkwät, ˈpa-rə-\

Definition of paraquat 

: a highly toxic contact herbicide containing a salt of a cation [C12H14N2]2+

First Known Use of paraquat

circa 1961, in the meaning defined above

History and Etymology for paraquat

para- + quaternary

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The first known use of paraquat was circa 1961

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More Definitions for paraquat

paraquat

noun
para·​quat | \ˈpar-ə-ˌkwät \

Medical Definition of paraquat 

: an herbicide containing a salt of a cation [C12H14N2]2+ that is used especially as a weed killer and that is extremely toxic to the liver, kidneys, and lungs if ingested

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