pyrophoric(redirected from pyrophorous)
1. Spontaneously igniting in air.
2. Producing sparks by friction.
[From pyrophorus, substance that ignites spontaneously : from Greek purophoros, fire-bearing : puro-, pyro- + -phoros, -phorous.]
1. (Chemistry) (of a chemical) igniting spontaneously on contact with air
2. (General Physics) (of an alloy) producing sparks when struck or scraped: lighter flints are made of pyrophoric alloy.
[C19: from New Latin pyrophorus, from Greek purophoros fire-bearing, from pur fire + pherein to bear]
py•ro•phor•ic(ˌpaɪ rəˈfɔr ɪk, -ˈfɒr-)
capable of igniting spontaneously in air.
[1830–40; < Greek pyrophór(os) fire-bearing]