Definitions Found:
spontaneously igniting in air also PYROPHORIC
- pyrophorousspontaneously igniting in air also PYROPHORIC
- pyrophoricspontaneously igniting in air also PYROPHOROUS
- pyrophoriccapable of igniting spontaneously in air.
- pyrophorusany substance capable of igniting spontaneously on exposure to air
- pyrophorusesPYROPHORUS, any substance capable of igniting spontaneously on exposure to air