Achalasia Definition

ăkə-lāzhə
noun
The failure of a ring of muscle fibers, such as a sphincter of the esophagus, to relax.
American Heritage Medicine

Origin of Achalasia

  • From Ancient Greek α- (a-, “not") + χάλασις (khalasis, “relaxation"), from χαλάω (khalaō, “I loosen").

    From Wiktionary

  • New Latin a– Greek khalasis relaxation (from khalān to loosen)

    From American Heritage Dictionary of the English Language, 5th Edition

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