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atresia

[ uh-tree-zhuh, -zhee-uh ]
/ əˈtri ʒə, -ʒi ə /
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noun Medicine/Medical.

the congenital absence, or the pathological closure, of an opening, passage, or cavity.

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Origin of atresia

1800–10; <New Latin <Greek a-a-6 + três(is) perforation + -ia-ia
a·tre·sic [uh-tree-zik, -sik], /əˈtri zɪk, -sɪk/, a·tret·ic [uh-tret-ik], /əˈtrɛt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for atresia

atresia
/ (əˈtriːʒɪə, -ʒə) /

noun

absence of or unnatural narrowing of a body channel
C19: New Latin, from Greek atrētos not perforated
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 atresia

atresia
[ ə-trēzhə, -zhē-ə ]

n.

The congenital absence or closure of a normal body orifice or tubular passage such as the anus, intestine, or external ear canal.
The degeneration and resorption of one or more ovarian follicles before maturation.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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