Definition of ulna in English:

ulna

Syllabification: ul·na
Pronunciation: /ˈəlnə
 
/

noun (plural ulnae /-ˌnē, -ˌnī/ or ulnas)

1The thinner and longer of the two bones in the human forearm, on the side opposite to the thumb. Compare with radius (sense 2).
More example sentences
  • All three heads run into a common tendon that crosses the elbow joint and inserts on the olecranon process on the ulna bone in the Forearm.
  • The ulna styloid process was readily identifiable in all children, and its identification was not limited by wrist contracture.
  • It may also join the supinator, the tendon of pronator teres, or the ulna.
1.1The corresponding bone in a quadruped’s foreleg or a bird’s wing.
More example sentences
  • All were made from the ulna - a wing bone - of the red-crowned crane.
  • They had been crafted from the ulnae (wing bones) of the red-crowned crane (Grus japonensis Millen) and had between five and eight finger-holes.
  • In the equid foreleg, radius and ulna are united, and the ulna is greatly reduced so that all weight is born on the radius.

Origin

late Middle English (denoting the humerus): from Latin; related to ell1.

Derivatives

ulnar

adjective
More example sentences
  • My self diagnosis is that I have ulnar nerve damage.
  • The former North Shore Twins player had a bone chip and a torn ulnar collateral ligament repaired in his right elbow.
  • He fell on his left elbow and severed his ulnar nerve, which meant he lost the use of his left hand, and an operation to repair the problem failed.

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