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herniated disk

noun Pathology.
  1. 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.
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Also called ruptured disk, slipped disk.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

herniated disk in Medicine

herniated disk

n.
  1. The protrusion of a degenerated or fragmented intervertebral disk into the intervertebral foramen, compressing the nerve root.protruded disk ruptured disk
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.