Found 2 items, similar to atresia.
English → English (WordNet) Definition: atresia atresia n : an abnormal condition in which a normal opening or tube in the body (as the urethra) is closed or absent
English → English (gcide) Definition: Atresia Atresia \A*tre"si*a\, n. [NL., fr. Gr. ? not perforated.] (Med.) Absence or closure of a natural passage or channel of the body; imperforation. [1913 Webster]