proximal ulna

noun

The upper end of the ulna bone, located at the elbow, forming the bony point (olecranon) and a large notch (trochlear notch) that fits with the upper arm bone (humerus) to create the stable hinge of the elbow joint, allowing arm bending and straightening.

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Meanings

nounproximal ulna (plural proximal ulnas)

plural proximal ulnas

  1. anatomyThe upper end of the ulna bone, located at the elbow, forming the bony point (olecranon) and a large notch (trochlear notch) that fits with the upper arm bone (humerus) to create the stable hinge of the elbow joint, allowing arm bending and straightening.
Cite this entry
APA

proximal ulna. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/proximal%20ulna

MLA

“proximal ulna.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/proximal%20ulna. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “proximal ulna,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/proximal%20ulna.

Source: proximal ulna on Wiktionary, CC BY-SA 4.0.