noun
- A white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer.
- synonyms: arsenic, arsenous anhydride, arsenous oxide, white arsenic, ratsbane
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| APA | WordNet. (2010). arsenic trioxide. Retrieved September 20, 2026, from http://smartdefine.org/arsenic_trioxide/definitions/1257657 |
| Chicago | WordNet. 2010. "arsenic trioxide" http://smartdefine.org/arsenic_trioxide/definitions/1257657 (accessed September 20, 2026). |
| Harvard | WordNet 2010, arsenic trioxide, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/arsenic_trioxide/definitions/1257657>. |
| MLA | WordNet. "arsenic trioxide" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/arsenic_trioxide/definitions/1257657> |