| NOUN | substance | ratsbane, arsenic, arsenic trioxide, arsenous anhydride, arsenous oxide, white arsenic | a white powdered poisonous trioxide of arsenic |
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| Meaning | A white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer. | |
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| Synonyms | arsenic, arsenic trioxide, arsenous anhydride, arsenous oxide, white arsenic | |
| Broader | trioxide | An oxide containing three atoms of oxygen in the molecule |
| Spanish | anhídrido arsenioso, arsénico, óxido arsenioso, trióxido de arsénico | |
| Catalan | òxid d'arsènic | |
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