| 单词 | carat |
| 释义 | carat /kar"euht/, n. 1. a unit of weight in gemstones, 200 milligrams (about 3 grains of troy or avoirdupois weight). Abbr.: c., ct. 2. karat. [1545-55; < ML carratus (used by alchemists) < Ar qirat weight of 4 grains < Gk kerátion carob bean, weight of 31/3 grains, lit., little horn, equiv. to kerat- (s. of kéras) horn + -ion dim. suffix] |
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