Category:Pyrophorous

Py*roph"o*rus, n. Etym: [nl. See pyrophorous.] (old chem.)

Defn: any one of several substances or mixtures which phosphoresce or Ignite spontaneously on exposure to air, as a heated mixture of alum, Potash, and charcoal, or a mixture of charcoal and finely divided Lead.

See also Category:Pyrophoric