| 单词 | arsenic |
| 释义 | arsenic n. & adj. --n 1. a non-scientific name for arsenic trioxide, a highly poisonous white powdery substance used in weed-killers, rat poison, etc. 2. Chem. a brittle semi-metallic element, used in semiconductors and alloys. Usage Symb.: As. --adj 1. of or concerning arsenic. 2. Chem. containing arsenic with a valency of five. Phrases and idioms red arsenic = REALGAR. white arsenic = sense 1. Derivatives arsenious adj. Etymology: ME f. OF f. L arsenicum f. Gk arsenikon yellow orpiment, identified with arsenikos male, but in fact f. Arab. al-zarnik f. al the + zarnik orpiment f. Pers. f. zar gold |
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