Atresia



the congenital absence, or the pathological closure, of an opening, passage, or cavity.
Historical Examples

atresia was in no instance great enough to account for the complete loss of enlarged follicles.
Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz John M. Legler

Perhaps in some cases of atresia there may be a secondary obliteration of a previously formed opening.
The Anatomy of the Human Peritoneum and Abdominal Cavity George. S. Huntington

Sometimes there is a complete closure or atresia of the lower part of the colon.
The Mother and Her Child William S. Sadler

atresia etiam consequitur vulnera et inflammationes morborum, ut diphtheritis et scarlatina.
Essays In Pastoral Medicine Austin Malley

noun
absence of or unnatural narrowing of a body channel
n.

“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.)).

atresia a·tre·sia (ə-trē’zhə, -zhē-ə)
n.

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.

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