[ uhl-nuh ]
/ ˈʌl nə /
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noun, plural ul·nae [uhl-nee], /ˈʌl ni/, ul·nas.
Anatomy. the bone of the forearm on the side opposite to the thumb.Compare radius (def. 7).
a corresponding bone in the forelimb of other vertebrates.
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Origin of ulna
1835–45; <Latin: elbow; akin to Greek ōlénē,Old English elnell2
OTHER WORDS FROM ulnaulnar, adjectivepost·ul·nar, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
How to use ulna in a sentence
The bones on which this species is founded are a pair of ulnae, one radius, four metatarsi, and one coracoid.Extinct Birds|Walter Rothschild
British Dictionary definitions for ulna
/ (ˈʌlnə) /
noun plural -nae (-niː) or -nas
the inner and longer of the two bones of the human forearm
the corresponding bone in other vertebrates
Derived forms of ulnaulnar, adjective
Word Origin for ulna
C16: from Latin: elbow, ell 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for ulna
[ ŭl′nə ]
n. pl. ul•nas
The larger bone of the two bones of the forearm, extending from elbow to wrist on the side opposite the thumb.cubitus elbow bone
Other words from ulnaul′nar adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for ulna
[ ŭl′nə ]
Plural ulnas ulnae (ŭl′nē)
The longer of the two bones of the forearm or lower portion of the foreleg. See more at skeleton.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.