- 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.
Origin of ulna
1835–45; < Latin: elbow; akin to Greek ōlénē, Old English eln ell2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ulnae
Historical Examples of ulnae
The bones on which this species is founded are a pair of ulnae, one radius, four metatarsi, and one coracoid.Extinct Birds
- the inner and longer of the two bones of the human forearm
- the corresponding bone in other vertebrates
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
inner bone of the forearm, 1540s, Latin, literally "elbow;" related to Old English eln (see elbow (n.)).
Online Etymology Dictionary, © 2010 Douglas Harper
- The larger bone of the two bones of the forearm, extending from elbow to wrist on the side opposite the thumb.cubitus elbow bone
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- 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.