Definition of atresia
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
From the M-W Editors
Origin and Etymology of atresia
New Latin, from 2a- + Greek trēsis perforation, from tetrainein to pierce — more at 1throw
First Known Use: 1790
Medical Dictionary
atresia
playMedical Definition of atresia
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
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