- (a.) Pertaining to, consisting of or containing, arsenic; as, arsenious powder or glass.
- (a.) Pertaining to or derived from, arsenic, when having an equivalence next lower than the highest; as, arsenious acid.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). arsenious. Retrieved September 23, 2026, from http://smartdefine.org/arsenious/definitions/1976036 |
| Chicago | Webster's. 2011. "arsenious" http://smartdefine.org/arsenious/definitions/1976036 (accessed September 23, 2026). |
| Harvard | Webster's 2011, arsenious, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/arsenious/definitions/1976036>. |
| MLA | Webster's. "arsenious" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/arsenious/definitions/1976036> |