- the connective tissue surrounding certain small vessels, as capillaries.
Origin of perithelium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- The connective tissue surrounding small blood vessels and capillaries.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.