atresia
noun
atre·sia ə-ˈtrē-zhə 
1
: absence or closure of a natural passage of the body
2
: absence or disappearance of an anatomical part (such as an ovarian follicle) by degeneration
Example Sentences
Recent Examples on the Web A’ja developed a benign tumor on her lip and Kyrie was diagnosed with biliary atresia, a liver disease that will require Kyrie to undergo a transplant. 
Char Adams, PEOPLE.com, 7 Oct. 2019 Sadie was born with biliary atresia, a condition in infants in which the bile ducts outside and inside the liver are scarred and blocked, according to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Fernando Alfonso Iii, CNN, 12 Sep. 2019 This is due to atresia, the ASRM explains, or the natural process through which follicles that house eggs in the ovaries degenerate and die. Natasha Lavender, SELF, 22 Aug. 2019 Didn’t Want to Get Too Close’ to Son Billy at FirstKimmel and his wife revealed that their son underwent two heart surgeries after he was born with a congenital heart condition, tetralogy of Fallot with pulmonary atresia. Mike Miller, PEOPLE.com, 23 Apr. 2018 The Jimmy Kimmel Live host’s son was born with a congenital heart condition called tetralogy of Fallot with pulmonary atresia. Jessica Derschowitz, EW.com, 21 Apr. 2018 Kimmel's son Billy, who turns one in April, was born with Tetralogy of Fallot with pulmonary atresia, which kicked off his crusade for affordable health care. Erin Jensen, USA TODAY, 27 Feb. 2018 Robertson, who lists his favorite wrestlers as John Cena and Roman Reigns, was stricken at birth with biliary atresia, a liver disease that stunted his growth and has required two transplants among 36 surgeries. Gene Guillot, NOLA.com, 26 Feb. 2018 Billy suffers from the congenital heart condition tetralogy of Fallot with pulmonary atresia. Karen Mizoguchi, PEOPLE.com, 11 Dec. 2017 See More
Char Adams, PEOPLE.com, 7 Oct. 2019 Sadie was born with biliary atresia, a condition in infants in which the bile ducts outside and inside the liver are scarred and blocked, according to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Fernando Alfonso Iii, CNN, 12 Sep. 2019 This is due to atresia, the ASRM explains, or the natural process through which follicles that house eggs in the ovaries degenerate and die. Natasha Lavender, SELF, 22 Aug. 2019 Didn’t Want to Get Too Close’ to Son Billy at FirstKimmel and his wife revealed that their son underwent two heart surgeries after he was born with a congenital heart condition, tetralogy of Fallot with pulmonary atresia. Mike Miller, PEOPLE.com, 23 Apr. 2018 The Jimmy Kimmel Live host’s son was born with a congenital heart condition called tetralogy of Fallot with pulmonary atresia. Jessica Derschowitz, EW.com, 21 Apr. 2018 Kimmel's son Billy, who turns one in April, was born with Tetralogy of Fallot with pulmonary atresia, which kicked off his crusade for affordable health care. Erin Jensen, USA TODAY, 27 Feb. 2018 Robertson, who lists his favorite wrestlers as John Cena and Roman Reigns, was stricken at birth with biliary atresia, a liver disease that stunted his growth and has required two transplants among 36 surgeries. Gene Guillot, NOLA.com, 26 Feb. 2018 Billy suffers from the congenital heart condition tetralogy of Fallot with pulmonary atresia. Karen Mizoguchi, PEOPLE.com, 11 Dec. 2017 See More Word History
Etymology
New Latin, from a- entry 2 + Greek trēsis perforation, from tetrainein to pierce — more at throw entry 1
First Known Use
1790, in the meaning defined at sense 1
Medical Definition
atresia
noun
atre·sia ə-ˈtrē-zhə
1
: absence or closure of a natural passage of the body
atresia of the small intestine
2
: absence or disappearance of an anatomical part (as an ovarian follicle) by degeneration