English edit

 
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Etymology edit

From Ancient Greek ἀ- (a-, not) + χάλασις (khálasis, relaxation), from χαλάω (khaláō, I loosen).

Pronunciation edit

Noun edit

achalasia (countable and uncountable, plural achalasias)

 
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  1. (medicine) A neuromuscular condition where a ring of muscles is unable to relax fully, causing obstruction of a lumen, as:
    1. (usually and especially) Such obstruction in the esophagus: esophageal achalasia.
      Coordinate term: pseudoachalasia
      1. (strictly) Such esophageal achalasia of primary (idiopathic) nature: primary esophageal achalasia.
    2. (occasionally) Such obstruction due to impairment of other gastrointestinal tract smooth muscles.

Translations edit