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herniated disk

noun, Pathology.
an abnormal protrusion of a spinal disk between vertebrae, most often in the lumbar region of the spine, causing pain due to pressure on spinal nerves.
Also called ruptured disk, slipped disk. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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herniated-disk in Medicine

herniated disk n.
The protrusion of a degenerated or fragmented intervertebral disk into the intervertebral foramen, compressing the nerve root. Also called protruded disk, ruptured disk.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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