Hypertext Webster Gateway: "psoriasis"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Psoriasis \Pso*ri"a*sis\, n. [NL., fr. Gr. ?, fr. ? psora.]
(Med.)
(a) The state of being affected with psora. [Obs.]
(b) A cutaneous disease, characterized by imbricated silvery
scales, affecting only the superficial layers of the
skin.
From WordNet (r) 1.7 (wn)
psoriasis
n : a chronic skin disease characterized by dry red patches
covered with scales; occurs especially on the scalp and
ears and genitalia and the skin over bony prominences
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