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单词 ulna
释义

WordReference Random House Unabridged Dictionary of American English © 2024
ul•na  (ul′nə),USA pronunciation n., pl. -nae (-nē),USA pronunciation -nas. 
  1. Anatomythe bone of the forearm on the side opposite to the thumb. Cf. radius (def. 7). See diag. under skeleton. 
  2. Zoologya corresponding bone in the forelimb of other vertebrates.
  • Latin: elbow; akin to Greek ōlénē, Old English eln ell2
  • 1835–45
ul′nar, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
ulna /ˈʌlnə/ n ( pl -nae / -niː/, -nas)
  1. the inner and longer of the two bones of the human forearm
  2. the corresponding bone in other vertebrates
Etymology: 16th Century: from Latin: elbow, ell1

ˈulnar adj
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