| 单词 | cobalt |
| 释义 | cobalt n. Chem. a silvery-white magnetic metallic element occurring naturally as a mineral in combination with sulphur and arsenic, and used in many alloys. Usage Symb.: Co. Phrases and idioms cobalt blue 1. a pigment containing a cobalt salt. 2. the deep-blue colour of this. Derivatives cobaltic adj. cobaltous adj. Etymology: G Kobalt etc., prob. = KOBOLD in mines |
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