lack or closure of an all-natural passage or station of the body imperforation
- an abnormal condition in which a normal orifice or tube in your body (as the urethra) is shut or absent
- lack or closing of a normal passageway or station associated with the human anatomy; imperforation.
Absence of a standard orifice, or failure of a structure to be tubular. Atresia make a difference many structures in the torso. As an example, esophageal atresia is a birth problem by which an element of the esophagus is certainly not hollow, with anal atresia, there's no opening at the end end for the intestine.
"occlusion of a normal passageway in the human body," 1807, from contemporary Latin atresia, from Greek atretos "perhaps not perforated," from a-, privative prefix, + tresis "perforation," from PIE *tere- (1) "to scrub, change," with types talking about boring and drilling (see toss (v.)).
The lack of a body orifice that could generally be there; the lack of a specific organ that's tubular in construction.
(letter.) Absence or closure of an all-natural passage or station associated with body; imperforation.