'Pityriasis' definitions:
Definition of 'pityriasis'
From: WordNet
noun
Any of several skin disorders characterized by shedding dry flakes of skin
Definition of 'Pityriasis'
From: GCIDE
- Pityriasis \Pit`y*ri"a*sis\, n. [NL., fr. Gr. ?, fr. ?, lit., bran.]
- 1. (Med.) A superficial affection of the skin, characterized by irregular patches of thin scales which are shed in branlike particles. [1913 Webster]
- 2. (Veter.) A disease of domestic animals characterized by dry epithelial scales, and due to digestive disturbances and alteration of the function of the sebaceous glands. [Webster 1913 Suppl.]
- Pityriasis versicolor [NL.] (Med.), a parasitic disease of the skin, characterized by the development of reddish or brownish patches. [1913 Webster]