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arsenous

[ ahr-suh-nuhs ]

adjective

, Chemistry.
  1. containing arsenic in the trivalent state, as arsenous chloride, AsCl 3 .
  2. of or derived from arsenous acid.

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Word History and Origins

Origin of arsenous1

First recorded in 1790–1800; arsen- + -ous

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arsenopyritearsenous acid

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