Psō-rĭ'a-sĭs, n.

(so-rī'a-sĭs), n. [Gr. ψωρίασις, from ψώρα, psora.] (Med.) (a.) The state of being affected with psora. [Obs.] (b.) A cutaneous affection consisting of patches of rough, amorphous scales, either continuous, or of indeterminate outline. Dunglison.