sodium arsenite


Definition of sodium arsenite

  1. :  a poisonous substance that is obtained as a concentrated solution or dry powder by treating arsenic trioxide with sodium hydroxide, that consists in some cases of a mixture of sodium ortho-arsenite Na3AsO3 and sodium meta-arsenite NaAsO2, and that is used chiefly as an insecticidal bait and weed killer

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to criticize severely

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