pompholyx

from The Century Dictionary.

• noun The white oxid which sublimes during the combustion of zinc: formerly called flowers of zinc. It rises and adheres to the dome of the furnace and the covers of the crucibles.
• noun In medicine, an eruption of deep-seated vesicles suggesting sago-grains, occurring principally on the palms of the hands and the soles of the feet. Also called chiropompholyx and dysidrosis.
• noun [capitalized] [NL.] In zoology, a generic name variously used

from the GNU version of the Collaborative International Dictionary of English.

• noun (Old Chem.) Impure zinc oxide.
• noun (Med.) A skin disease in which there is an eruption of bullæ, without inflammation or fever.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun medicine dyshidrosis
• noun chemistry, obsolete impure zinc oxide