ulna

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“
The medial and lateral heads originate on the upper-arm bone and attach on the ulna, which is one of the forearm bones.

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Definitions (4)

Toggle American Heritage definitions American Heritage Dictionary (2)

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

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Toggle GNU Webster definitions GNU Webster's 1913 (1)

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Examples (50)

  • The el- segment comes from the Latin ulna, the large inner bone of the forearm.
  • "It was an ulna--an elbow--which was exactly the same first bond I found of Lucy," says Johnson. —  Omni: May 1994
  • (The ulna is the bone that reaches the wrist on the pinkie side.) —  Scientific American
  • Tulerpeton clearly has a wrist-the mass of bones between the radius, ulna, and the digits. —  Evolution News & Views
  • Add a bunch of small bones between the radius & ulna, and the now-aligned digits, to form a wrist. —  Evolution News & Views
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Etymologies (1)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. Latin, elbow, forearm; see el- in Indo-European roots.
 

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