pompholyx

n. [ L., fr. Gr. &unr_; a bubble, the slag on the surface of smelted ore, from &unr_; a blister. ] 1. (Old Chem.) Impure zinc oxide. [ 1913 Webster ]

2. (Med.) A skin disease in which there is an eruption of bullæ, without inflammation or fever. [ 1913 Webster ]