achalasia

[ak-uh-ley-zhuh, -zhee-uh, -zee-uh]
noun Medicine/Medical.
  1. inability of a circular muscle, especially of the esophagus or rectum, to relax, resulting in widening of the structure above the muscular constriction.

Origin of achalasia

1910–15; a-6 + Greek chálas(is) (chala- (stem of chalân to loosen) + -sis -sis) + -ia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for achalasia

achalasia

noun
  1. pathol failure of the cardiac sphincter of the oesophagus to relax, resulting in difficulty in swallowing

Word Origin for achalasia

New Latin, from a- 1 + Greek chalasis relaxation
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

achalasia in Medicine

achalasia

[ăk′ə-lāzhə]
n.
  1. The failure of a ring of muscle fibers, such as a sphincter, to relax.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.