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.

Word History and Origins

Origin of arsenous¹

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

Example Sentences

More recently, all three seem to have voted to halt Trump-appointed Judge Matthew Kacsmaryk’s arsenous decision nullifying FDA approval of the abortion pill.

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It is, therefore, in this and the analogous processes of roasting, that the sulphurous and arsenous vapours are so profusely given off.

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The most effective treatment that the writer has ever used is the following formula recommended by Dr. Law: Arsenous acid one dram, sulfate of iron five drams, powdered areca nut two ounces, common salt four ounces.

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