ulna

The ulna is a long, thin bone in your forearm, on the opposite side of your arm from your thumb.

(noun)

An example of ulna is a bone in your forearm.

See ulna in Webster's New World College Dictionary

noun pl. ulnae or ulnas

the larger of the two bones of the forearm of humans, on the side opposite the thumb
a corresponding bone in the forelimb of other land vertebrates

Origin: ModL < L, elbow: for IE base see ell

Related Forms:

See ulna in American Heritage Dictionary 4

noun pl. ul·nas or ul·nae (-nē)

The bone extending from the elbow to the wrist on the side opposite to the thumb in humans.
A corresponding bone in the forelimb of other vertebrates.

Origin:

Origin: Latin, elbow, forearm; see el- in Indo-European roots

Related Forms:

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