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Definition of: psoriasis
(sə·rī′ə·sis) noun Pathol.
A non-contagious, inflammatory skin disease, chronic or acute, characterized by reddish patches and white scales. [<NL <Gk. psōriaein have an itch <psōra an itch]
—pso·ri·at·ic (sôr′ē·at′ik, sō′rē-) adjective
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