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Definition of ulna

ulna

/ˈʌl.nə/
ul · na
Plural:ulnae
•
Adjective:ulnar
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ulna Lexical Profile

ulna Game Scores & Validity

• noun

1

The thinner and longer of the two bones in the human forearm, located on the medial side opposite the thumb, running parallel to the radius from the elbow to the wrist; or the corresponding bone in the forelimb of other vertebrates.

Example

"The X-ray revealed a clean fracture of the distal ulna after she braced herself during the fall."

Synonyms
View all synonyms for ulna

• Nearby Words

ulluco
ulm
ulmaria
ulna
ulsan
ulterior
ultimate

Word Origin & Etymology

Borrowed in the mid-16th century directly from Latin 'ulna', meaning 'elbow' or 'arm', which is cognate with the Ancient Greek 'olene' and Old English 'eln' (the source of the English unit of measurement 'ell' and the first element of 'elbow').

Cite this Entry

Wordmom. (2026). Definition of Ulna. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/ulna
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