the external covering of an organ or other structure, derived from connective tissue, especially the external covering of a blood vessel.
Origin of adventitia
1875–80; < Latin adventīcia, neuter plural of adventīcius adventitious
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the outermost covering of an organ or part, esp the outer coat of a blood vessel
Word Origin for adventitia
C19: New Latin, from the neuter plural of Latin adventīcius; see adventitious
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Of or relating to the adventitia of an organ or blood vessel.
The outermost membranous covering of an organ or structure, especially the outer coat of an artery.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.