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long bone

noun, Anatomy, (in vertebrate animals)
any of the long, cylindrical, marrow-containing bones of the limbs:
the long bone of the arm.
Origin of long bone
1855-60 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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long-bone in Medicine

long bone n.
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.
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