ulna

 
Pronunciation: /ˈʌlnə/

noun (plural ulnae /-niː/ or ulnas)

  • the thinner and longer of the two bones in the human forearm, on the side opposite to the thumb. Compare with radius (sense 2 of the noun).
  • the bone in a quadruped’s foreleg or a bird’s wing that corresponds to the ulna in a human being.

Derivatives

ulnar

adjective

Origin:

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