noun
- A white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer.
- synonyms: arsenic, arsenic trioxide, arsenous anhydride, white arsenic, ratsbane
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| APA | WordNet. (2010). arsenous oxide. Retrieved September 27, 2026, from http://smartdefine.org/arsenous_oxide/definitions/1257659 |
| Chicago | WordNet. 2010. "arsenous oxide" http://smartdefine.org/arsenous_oxide/definitions/1257659 (accessed September 27, 2026). |
| Harvard | WordNet 2010, arsenous oxide, Smart Define, viewed 27 September, 2026, <http://smartdefine.org/arsenous_oxide/definitions/1257659>. |
| MLA | WordNet. "arsenous oxide" 23 October 2010. Web. 27 September 2026. <http://smartdefine.org/arsenous_oxide/definitions/1257659> |