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Potts' operation

n.
  1. Direct side-to-side anastomosis between the aorta and the pulmonary artery as a palliative procedure in congenital malformation of the heart.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.