| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024col•co•thar (kol′kə thər),USA pronunciation n. [Chem.]- Chemistrythe brownish-red oxide of iron produced by heating ferrous sulfate: used chiefly as a pigment in paints and theatrical rouge, and as a polishing agent. Also called jewelers' rouge.
- Greek chálkanthos copper sulfate solution
- Old Spanish colcotar, Spanish Arabic qulquṭār, perh.
- Medieval Latin
- 1595–1605
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