Pyrophorus

Definition:

• (n.) 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.

Compare pyrophorus with other words:

pyrophorous vs. pyrophorus

divided vs. pyrophorus

air vs. pyrophorus

finely vs. pyrophorus

exposure vs. pyrophorus

fire vs. pyrophorus