noun
- A white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer.
- synonyms: arsenic trioxide, arsenous anhydride, arsenous oxide, white arsenic, ratsbane
- A very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar.
- synonyms: As, atomic number 33
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| APA | WordNet. (2010). arsenic. Retrieved September 22, 2026, from http://smartdefine.org/arsenic/definitions/1247603 |
| Chicago | WordNet. 2010. "arsenic" http://smartdefine.org/arsenic/definitions/1247603 (accessed September 22, 2026). |
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| MLA | WordNet. "arsenic" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/arsenic/definitions/1247603> |