achalasia
English
Etymology
From Ancient Greek ἀ- (a-, “not”) + χάλασις (khálasis, “relaxation”), from χαλάω (khaláō, “I loosen”).
Noun
achalasia (countable and uncountable, plural achalasias)
- (medicine, pathology) A neuromuscular condition where a ring of muscles is unable to relax fully; usually with reference to gastrointestinal smooth muscles or to esophageal achalasia when not otherwise specified.
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