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acanthosis

(ăk′ăn-thō′sĭs, ăk′ən-)
n. pl. ac•an•tho•ses (-sēz′)
  1. An increase in the thickness of the prickle cell layer of the epidermis; hyperacanthosis.
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Related formsac′an•thot′ic (-thŏt′ĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.