ulna

[ uhl-nuh ]

/ ˈʌl nə /

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.

Nearby words

ullage rocket, ullswater, ulluco, ulm, ulmaceous, ulna, ulnad, ulnar artery, ulnar collateral artery, ulnar extensor muscle of wrist, ulnar flexor muscle of wrist

Origin of ulna

1835–45; < Latin: elbow; akin to Greek ōlénē, Old English eln ell²

Related formsul·nar, adjectivepost·ul·nar, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ulnar

In a tolerably muscular arm, the incision will have to be about an inch inside of the ulnar border of the limb.
A Manual of the Operations of Surgery|Joseph Bell
The ulnar carpal (fig. 57, 5) is a somewhat larger, more irregular bone, lying adjacent to the end of the ulna.
The Vertebrate Skeleton|Sidney H. Reynolds
Certain authors give it the name of ulnar extensor of the wrist.
Artistic Anatomy of Animals|douard Cuyer
The two distinct carpal bones are the radial carpal and the ulnar carpal.
The Vertebrate Skeleton|Sidney H. Reynolds

In severe cases the median and ulnar nerves are also the seat of cicatricial changes (ischæmic neuritis).
Manual of Surgery|Alexis Thomson and Alexander Miles

British Dictionary definitions for ulnar

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 Formsulnar, 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

Medicine definitions for ulnar

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

Related formsul′nar adj.

Science definitions for ulnar

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.