adventitia

[ ad-ven-tish-ee-uh, -tish-uh ]

/ ˌæd vɛnˈtɪʃ i ə, -ˈtɪʃ ə /

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noun Anatomy.

the external covering of an organ or other structure, derived from connective tissue, especially the external covering of a blood vessel.

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Origin of adventitia

1875–80; <Latin adventīcia, neuter plural of adventīciusadventitious

OTHER WORDS FROM adventitia

ad·ven·ti·tial, adjective

Words nearby adventitia

advection, advection fog, advent, Advent calendar, Adventist, adventitia, adventitial, adventitial cell, adventitial neuritis, adventitious, adventitious cyst

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use adventitia in a sentence

Up to the third decade there is only a strengthening of the media and adventitia.
Arteriosclerosis and Hypertension:|Louis Marshall Warfield
The adventitia varies much in thickness, being better developed in the medium-sized than in the large arteries.
Arteriosclerosis and Hypertension:|Louis Marshall Warfield
Coincidently with this, there is thickening by a connective tissue growth in the adventitia.
Arteriosclerosis and Hypertension:|Louis Marshall Warfield
There is also, as a rule, rather pronounced hypertrophy of the adventitia.
Arteriosclerosis and Hypertension:|Louis Marshall Warfield

British Dictionary definitions for adventitia

adventitia

/ (ˌædvɛnˈtɪʃɪə, -ˈtɪʃə) /

noun

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

Medical definitions for adventitia

adventitia

[ ăd′vĕn-tĭsh′ə ]

The outermost membranous covering of an organ or structure, especially the outer coat of an artery.