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adventitia

[ad-ven-tish-ee-uh, -tish-uh]
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noun Anatomy.
  1. 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 adventīcius adventitious
Related formsad·ven·ti·tial, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for adventitia

Historical Examples

  • 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

noun
  1. the outermost covering of an organ or part, esp the outer coat of a blood vessel
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Word Origin

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

adventitia in Medicine

adventitia

(ăd′vĕn-tĭshə)
n.
  1. The outermost membranous covering of an organ or structure, especially the outer coat of an artery.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.