porokeratosis

[ pôr′ō-kĕr′ə-tōsĭs ]

n.

A rare dermatosis marked by thickening of the stratum corneum together with progressive centrifugal atrophy.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.