Medical Dictionary

adventitia

noun ad·ven·ti·tia \ˌad-vən-ˈtish-(ē-)ə, -(ˌ)ven-\

Medical Definition of ADVENTITIA

:  the outer layer that makes up a tubular organ or structure and especially a blood vessel, is composed of collagenous and elastic fibers, and is not covered with peritoneum—called also tunica adventitia, tunica externa
July 28, 2015
pachyderm Hear it
an elephant
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears