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thallium sulfate

American  
Or thallous sulfate

noun

Chemistry.

  1. a colorless, crystalline, water-soluble, poisonous solid, Tl 2 SO 4 , used chiefly as an insecticide and rodenticide.

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In 1957, the Texas legislature cut the allowable dose of thallium sulfate in a rat-poison mixture from 3% to 1%; the U.S.

From Time Magazine Archive

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.