n.
Protrusion of a part of an intervertebral disk through the fibrocartilage, occurring usually in the lower lumbar region and often causing back pain or sciatica.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
