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ulna

ulna

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ul·na    Audio Help   (ŭl'nə)   

n.   pl. ul·nas or ul·nae (-nē)

  1. The bone extending from the elbow to the wrist on the side opposite to the thumb in humans.

  2. A corresponding bone in the forelimb of other vertebrates.


[Latin, elbow, forearm; see el- in Indo-European roots.]
ul'nar adj.
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The American Heritage® Dictionary of the English Language, Fourth Edition
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