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gastric bypass

noun
  1. a surgical procedure by which all or part of the stomach is circumvented by anastomosis to the small intestine, performed to overcome obstruction or in the treatment of morbid obesity.
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Also called gastroplasty.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

gastric bypass in Medicine

gastric bypass

n.
  1. A surgical procedure used for treatment of morbid obesity, consisting of the severance of the upper stomach, anastomosis of the small upper pouch of the stomach to the jejunum, and closure of the distal part of the stomach.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.