ulna

views updated Jun 27 2018

ul·na / ˈəlnə/ • n. (pl. -nae / -ˌnē; -ˌnī/ or -nas ) the thinner and longer of the two bones in the human forearm, on the side opposite to the thumb. Compare with radius (sense 2). ∎  the corresponding bone in a quadruped's foreleg or a bird's wing.DERIVATIVES: ul·nar adj.

The Oxford Pocket Dictionary of Current English

ulna

views updated Jun 11 2018

ulna Long bone of the inner side of the forearm. At its upper end it articulates with the humerus in the upper arm and with the radius in the forearm.

World Encyclopedia

ulna

views updated May 14 2018

ulna The larger of the two bones in the forearm of vertebrates (compare radius). It articulates with the outer carpals at the wrist and with the humerus at the elbow.

A Dictionary of Biology

ulna

views updated May 23 2018

ulna (ul-nă) n. the inner and longer bone of the forearm. It articulates with the humerus and radius above and with the radius and indirectly with the wrist bones below.
—ulnar (ul-ner) adj.

A Dictionary of Nursing

ulna

views updated May 29 2018

ulna In tetrapods, the longer and thicker of the two bones of the fore limb; its upper end articulates with the humerus.

A Dictionary of Zoology MICHAEL ALLABY

ulna

views updated May 29 2018

ulna (anat.) larger inner bone of the forearm. XVI. — L. ulna forearm, ELL.
Hence ulnar XVIII.

The Concise Oxford Dictionary of English Etymology T. F. HOAD

ulna

views updated May 08 2018

ulna In tetrapods (Tetrapoda), the post-axial bone of the fore limb.

A Dictionary of Earth Sciences AILSA ALLABY and MICHAEL ALLABY

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