資料來源 : Webster's Revised Unabridged Dictionary (1913)

Pyrophoric \Pyr`o*phor"ic\, Pyrophorous \Py*roph"o*rous\, a.
   [Pyro- + Gr. ? to bear.]
   Light-producing; of or pertaining to pyrophorus.

   {Pyrophoric iron} (Chem.), finely reduced iron, which ignites
      spontaneously on contact with air.