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definitions

pachynsis

[pă-kĭn′sĭs]
n.
  1. A pathological thickening of a bodily organ, tissue, or structure.
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.