adventitia

noun ad·ven·ti·tia \ ˌad-vən-ˈti-shə , -(ˌ)ven- \

Definition of adventitia

: an external chiefly connective tissue covering of an organ; especially : the external coat of a blood vessel

adventitial

play \-shəl\ adjective

Origin and Etymology of adventitia

borrowed from New Latin, alteration of Latin adventīcia, neuter plural of adventīcius "coming from outside, external" — more at adventitious


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

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