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.
noun plural -nae (-niː) or -nas
- the inner and longer of the two bones of the human forearm
- the corresponding bone in other vertebrates
n.inner bone of the forearm, 1540s, Latin, literally “elbow;” related to Old English eln (see elbow (n.)). 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
Plural ulnas ulnae (ŭl′nē)
- The longer of the two bones of the forearm or lower portion of the foreleg. See more at skeleton.