ul·​na | \ ˈəl-nə How to pronounce ulna (audio) \
plural ulnae\ ˈəl-​nē How to pronounce ulna (audio) \ or ulnas

Definition of ulna

: the bone on the little-finger side of the human forearm also : a corresponding part of the forelimb of vertebrates above fishes

Other Words from ulna

ulnar \ ˈəl-​nər How to pronounce ulna (audio) , -​ˌnär \ adjective

Examples of ulna in a Sentence

Recent Examples on the Web The surgery repairs a torn ligament in the elbow — the ulnar collateral ligament (UCL), which connects the humerus to the ulna — with a tendon from elsewhere in the body. Hayes Gardner, Baltimore Sun, 27 Apr. 2022 The bones of paddlefish and sturgeons who died in the Chicxulub Impact indicated that the asteroid struck in the spring, and a hadrosaur in Blagoveshchensk was presumed to have broken its ulna while eating leaves or mating. Rafil Kroll-zaidi, Harper’s Magazine , 27 Apr. 2022 The excavation that turned up the whale bones—a matching radius and ulna of an adult male—began in November 2019. Alex Fox, Smithsonian Magazine, 23 June 2020 The bird was hit in the ulna — a bone in its wing — but the bullet fragments weren’t immediately removed over fears her wing could be further damaged, communications director Tracey Berry told the station Sunday. Fox News, 26 Nov. 2019 These are each connected to the ulna and the radius. David Grossman, Popular Mechanics, 28 Nov. 2018 Those ligaments connect the humerus (the long bone in your upper arm between the elbow joint and shoulder) and the ulna (the long, thinner bone in your forearm on the opposite side of your thumb). Gabriel Baumgaertner, SI.com, 4 July 2018 Two days later, shortstop Elvis Andrus was hit by a fastball that broke his right ulna bone just below the elbow. Jeff Wilson, star-telegram, 10 May 2018 Napoli have confirmed that new signing Alex Meret has suffered a fracture of the left ulna during one of his first training sessions at the club, following his recent move from Udinese to I Partenopei. SI.com, 11 July 2018 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ulna.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of ulna

1541, in the meaning defined above

History and Etymology for ulna

New Latin, from Latin, elbow — more at ell

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Cite this Entry

“Ulna.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ulna. Accessed 5 Oct. 2022.

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More Definitions for ulna


ul·​na | \ ˈəl-nə How to pronounce ulna (audio) \
plural ulnas or ulnae\ -​nē \

Kids Definition of ulna

: the bone on the little-finger side of the arm between the wrist and elbow


ul·​na | \ ˈəl-nə How to pronounce ulna (audio) \
plural ulnae\ -​nē How to pronounce ulna (audio) \ or ulnas

Medical Definition of ulna

: the bone on the little-finger side of the human forearm that forms with the humerus the elbow joint and serves as a pivot in rotation of the hand

More from Merriam-Webster on ulna

Nglish: Translation of ulna for Spanish Speakers

Britannica.com: Encyclopedia article about ulna


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