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incapacitant

[in-kuh-pas-i-tuh nt]
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noun
  1. something, as a chemical spray, that incapacitates an individual: to use incapacitants for riot control.

Origin of incapacitant

First recorded in 1960–65; incapacit(ate) + -ant
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for incapacitant

incapacitant

noun
  1. a substance that can temporarily incapacitate a person, used esp as a weapon in chemical warfare
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012