ulna

American  

[uhl-nuh] / ˈʌl nə /

noun

plural

ulnae, ulnas

1. Anatomy. the bone of the forearm on the side opposite to the thumb.

2. a corresponding bone in the forelimb of other vertebrates.

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ulna British  

/ ˈʌlnə /

noun

1. the inner and longer of the two bones of the human forearm

2. the corresponding bone in other vertebrates

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Other Word Forms

• postulnar adjective
• ulnar adjective

Etymology

Origin of ulna

1835–45; < Latin: elbow; akin to Greek ōlénē, Old English eln ell ²

Example Sentences

About twenty years later, scientists reported analyses of additional bones from the same discovery, including forearm bones known as ulnae and a thigh bone called the femur.

From Science Daily

Haniger left the game, and tests revealed a fractured ulna that required surgery.

From Seattle Times

Jefferson, who had a deep passion for natural history, had received several bones, including the ulna, radius and claws, of an unknown animal.

From Seattle Times

The UCL connects the humerus bone to ulna bone at the elbow.

From Seattle Times

The creature’s two front fins had bones corresponding to our humerus, radius, ulna and wrist bones.

From New York Times