Definition of achalasia in English:



mass nounMedicine
  • A condition in which the muscles of the lower part of the oesophagus fail to relax, preventing food from passing into the stomach.

    • ‘The symptoms of achalasia are usually very characteristic.’
    • ‘The diagnostic studies confirmed the initial impression that the patient has an esophageal motility disorder, demonstrating classical findings of achalasia.’
    • ‘If endoscopy shows no obvious abnormality a diagnosis of a primary motility disturbance of the oesophagus such as achalasia should be considered.’
    • ‘Patients with achalasia typically present with dysphagia to solids and liquids.’
    • ‘This case also illustrates the therapeutic dilemma if surgery fails in patients with achalasia.’


Early 20th century: from a- ‘without, not’ + Greek khalasis ‘loosening’ (from khalan ‘relax’) + -ia.