Definitions of ignite:

• verb:   cause to start burning; subject to fire or great heat

  Example: "Great heat can ignite almost any dry matter"

• verb:   start to burn or burst into flames

  Example: "Marsh gases ignited suddenly"

• verb:   arouse or excite feelings and passions

  Example: "The ostentatious way of living of the rich ignites the hatred of the poor"