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English definition of “achalasia”

achalasia

noun [U]     /ˌæk.əˈleɪ.ʒə/ US  // specialized
a condition in which the sphincter muscle of the oesophagus does not relax enough to allow someone to swallow normally : Patients with advanced achalasia may be better managed with primary oesophageal resection.Digestive disorders
(Definition of achalasia noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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