| 单词 | ulna |
| 释义 | ulna n. (pl. ulnae) 1. the thinner and longer bone in the forearm, on the side opposite to the thumb (cf. RADIUS 3). 2. Zool. a corresponding bone in an animal's foreleg or a bird's wing. Derivatives ulnar adj. Etymology: L, rel. to Gk olene and ELL |
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