One of the mysteries of the English language finally explained.
Absence or abnormal narrowing of an opening or passage in the body.
- ‘The main objective of our study was to identify chromosomal regions possibly containing putative disease loci involved in the etiology of anal atresia.’
- ‘An X-ray revealed she had a condition called trachea oesophageal fistula and atresia, where the oesophagus and windpipe have not split properly.’
- ‘The Foundation is of vital importance to Sarah and her family because her youngest daughter, Carol, was diagnosed last year with a rare liver disease called biliary atresia.’
- ‘Mary has pulmonary atresia, a condition that means the heart and the main blood vessel to the lungs have failed to develop properly.’
- ‘Cheryl was diagnosed with pulmonary atresia as a baby, and underwent two heart operations when she was six-months-old and five.’
The degeneration of those ovarian follicles which do not ovulate during the menstrual cycle.
- ‘The process by which follicles degenerate and disappear is little understood and is termed follicular atresia.’
- ‘These structures form through a process of follicular atresia accompanied by hypertrophy of the follicular cells.’
- ‘Furthermore, they may cause premature depletion of the follicle pool by induction of follicular atresia or oocyte apoptosis and, thereby, lead to reduced fertility.’
- ‘Mammalian females have a fixed number of oocytes at birth, which decreases dramatically with advancing age due to follicular atresia.’
- ‘This results in atresia of the dominant follicle and re-initiation of follicular recruitment.’
Early 19th century: from a- ‘without’ + Greek trēsis ‘perforation’ + -ia.
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