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
A neuromuscular problem where a ring of muscles is unable to fully relax.
Wiktionary
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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