obstruction of the flow of spinal fluid by blockage of the spinal canal.
Also called subarachnoid block.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Pathological obstruction of the flow of cerebrospinal fluid in the spinal subarachnoid space.
Spinal anesthesia. Not in technical use.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.