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adamsite

[ad-uh m-zahyt]
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noun Chemistry, Military.
  1. a yellow irritant smoke, containing a poisonous form of arsenic and used as a harassing agent.
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Origin of adamsite

1920–25; named after R. Adams; see -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for adamsite

adamsite

noun
  1. a yellow poisonous crystalline solid that readily sublimes; diphenylaminechlorarsine. It is used in chemical warfare as a vomiting agent. Formula: C 6 H 4 AsClNHC 6 H 4; relative density: 1.65; melting pt: 195°C; boiling pt: 410°CAlso called: phenarsazine chloride
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Word Origin

C20: named after Roger Adams (1899–1971), American chemist
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