a yellow irritant smoke, containing a poisonous form of arsenic and used as a harassing agent.
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British Dictionary definitions for adamsite
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°C: Also called: phenarsazine chloride
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