Definitions for "Pyrophoric"
Materials that ignite spontaneously in air below 130F (54C).
liable of igniting within 5 minutes after coming into contact with air
materials that may undergo spontaneous heating or self ignition upon contact with air. Iron Sulfide Aluminum Alkyls Alkyl Boranes Aluminum fines
Keywords:  pertaining, light, producing
Light-producing; of or pertaining to pyrophorus.