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atresia

American  
[uh-tree-zhuh, -zhee-uh] / əˈtri ʒə, -ʒi ə /

noun

Medicine/Medical.
  1. the congenital absence, or the pathological closure, of an opening, passage, or cavity.


atresia British  
/ əˈtriːʒɪə, -ʒə /

noun

  1. absence of or unnatural narrowing of a body channel

"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

Other Word Forms

Etymology

Origin of atresia

1800–10; < New Latin < Greek a- a- 6 + três ( is ) perforation + -ia -ia

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Biliary atresia is the leading cause of pediatric liver transplants and currently has no approved therapeutic options beyond surgery or liver transplant, Ipsen said.

From The Wall Street Journal ● Jul. 24, 2026

She said Reggie was born with a number of health complications, including oesophageal atresia and skeletal dysplasia, meaning he will have to have both legs amputated.

From BBC ● Sep. 27, 2025

Within weeks he was diagnosed with biliary atresia, a blockage in the ducts that carry bile from the liver to the gallbladder, a rare form of liver disease only seen in infants.

From Los Angeles Times ● May 4, 2022

Cecilia had been suffering since birth with biliary atresia.

From Seattle Times ● Jun. 18, 2021

Congenital stenosis, if not an absolute atresia, yields more readily to esophagoscopic bouginage than cicatricial stenosis.

From Bronchoscopy and Esophagoscopy A Manual of Peroral Endoscopy and Laryngeal Surgery by Chevalier Jackson

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