Ar*se"ni*ous (#), a. [Cf. F. ars'enieux.]

1.

Pertaining to, consisting of, or containing, arsenic; as, arsenious powder or glass.

2. Chem.

Pertaining to, or derived from, arsenic, when having an equivalence next lower than the highest; as, arsenious acid.

 

© Webster 1913.

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