- 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
Examples from the Web for ulna
Historical Examples of ulna
The ulna must then be cleared, and the triceps divided at its insertion.A Manual of the Operations of Surgery
Ulna, from the top of the shoulder or arme-hole, to the top of the middle finger.The Way To Geometry
The ends of the secondaries must not be separated from the bone of the forearm, or the ulna.Taxidermy and Zoological Collecting
William T. Hornaday
Its radius and ulna are separate bones, not fused as they are normally.
The fore-arm or antibrachium consists of two bones, the radius and ulna.The Vertebrate Skeleton
Sidney H. Reynolds
- the inner and longer of the two bones of the human forearm
- the corresponding bone in other vertebrates
Word Origin for ulna
inner bone of the forearm, 1540s, Latin, literally "elbow;" related to Old English eln (see elbow (n.)).
- 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 longer of the two bones of the forearm or lower portion of the foreleg. See more at skeleton.