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Adventitia


/ˌadvenˈtiSH(ē)ə/

Noun

1. The outermost connective tissue covering of any organ, vessel, or other structure.(wikipedia.org)

2. The outermost layer of the wall of a blood vessel. (Google Dictionary)

3. The external covering of an organ or other structure, derived from connective tissue, especially the external covering of a blood vessel. (dictionary.reference.com)

4. The outermost connective tissue covering of any organ, vessel, or other structure not covered by a serosa; instead, the covering is properly derived from without (i.e., from the surrounding connective tissue) and does not form an integral part of such organ or structure. (biology-online.org)

Adjective: adventitial

Synonym: tunica adventitia, membrana adventitia

Word origin: Latin adventīcia, neuter plural of adventīcius adventitious

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