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ulna

[ 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 ulna

ulnar, 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

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 ulna

ulnar, 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

ulna
[ ŭlnə ]

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 ulna

ulnar 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

ulna
[ ŭlnə ]

Plural ulnas ulnae (ŭl)

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.
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