- the congenital absence, or the pathological closure, of an opening, passage, or cavity.
Origin of atresia
- absence of or unnatural narrowing of a body channel
Word Origin for atresia
Word Origin and History for atretic
"occlusion of a natural passage in the body," 1807, from Modern Latin atresia, from Greek atretos "not perforated," from a-, privative prefix, + tresis "perforation," from PIE *tere- "to rub, turn," with derivatives referring to boring and drilling (see throw (v.)).
- Relating to atresia.
- 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.