achalasia

noun acha·la·sia \ ˌā-kə-ˈlā-zh(ē-)ə \

Definition of achalasia

: failure of a ring of muscle (such as the anal sphincter or one of the esophagus) to relax

Origin and Etymology of achalasia

2a- + Greek chálasis "loosening, relaxation" (from chaláō, chalân "to loosen" —of obscure origin— + -sis -sis) + 1-ia


Medical Dictionary

achalasia

noun acha·la·sia \ ˌā-kə-ˈlā-zh(ē-)ə \

medical Definition of achalasia

: failure of a ring of muscle (as a sphincter) to relax
  • achalasia of the esophagus
  • achalasia of the anal sphincter
— compare cardiospasm

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