- plural of ulna.
Example Sentences
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While other species of birds have hollow bones, the club-winged manakins have solid ulnas that help enhance the sound production of their wing songs.
From Washington Post • Jun. 15, 2017
Besides the ulnas, there are pieces of ribs, scapula, tibia, and feet.
From Archeological Investigations Bureau of American Ethnology, Bulletin 76 by Fowke, Gerard