Definitions for "adventitia"
Keywords:  outermost, ahd, yah, ven, tish
the outermost covering of a structure or organ
(ahd'-ven-TISH-yah) The outermost covering of an organ or tissue.
the membranous outer covering of an organ or blood vessel.
an enveloping or covering membrane or layer of body tissue
The outer layer of the arteries containing nerves and blood vessels.