noun Anatomy. (in vertebrate animals)
any of the long, cylindrical, marrow-containing bones of the limbs: the long bone of the arm.
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- long arm,
- long arm of the law, the,
- long axis,
- long barrow,
- long beach,
- long branch,
- long card,
- long ciliary nerve,
- long clam,
- long con
Origin of long bone
First recorded in 1855–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
One of the elongated bones of the extremities, consisting of a tubular shaft, which is composed of compact bone surrounding a central marrow-filled cavity, and two expanded portions that usually serve as articulation points.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.