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pachynsis

(pă-kĭn′sĭs)
n.
  1. A pathological thickening of a bodily organ, tissue, or structure.
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Related formspa•chyn′tic adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.