noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A condition in which a body orifice or passage in the body is abnormally closed or absent. countable, uncountable
2. 2
   an abnormal condition in which a normal opening or tube in the body (as the urethra) is closed or absent wordnet

Synonyms

All synonyms

impatencyimperforation

Antonyms

All antonyms

patency

Etymology

From Latin atresia, from Ancient Greek ἀ- (a-, “not, without”) and τρῆσις (trêsis, “perforation”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.