#ignition  the process of initiating combustion
  supertype:  natural_process__naturalproces__natural_action__naturalaction__action__activity  a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
  subtype:  spontaneous_combustion__spontaneouscombustion  ignition of a substance (as oily rags) resulting from an internal oxidation process

No statement uses or specializes ignition; click here to add one.