Ar-sē'ni-oûs, a.
a. [Fr. arsénieux.] (Chem.) (a.) Pertaining to, consisting of, or containing arsenic; as, arsenious powder or glass. Ure. (b.) Composed of two equivalents of arsenic and three of oxygen; as, arsenious acid.
a. [Fr. arsénieux.] (Chem.) (a.) Pertaining to, consisting of, or containing arsenic; as, arsenious powder or glass. Ure. (b.) Composed of two equivalents of arsenic and three of oxygen; as, arsenious acid.