ignitor

/ɪɡˈnaɪtər/
noun
  1. A device that causes something to catch fire or start burning; same as igniter.
    • He replaced the ignitor on the stove so the burner would work again.
    • The rocket's ignitor fired perfectly, sending the spacecraft into orbit.
    • The furnace ignitor glowed red before the gas lit.
  2. A person or thing that starts a process or event.
    • The young activist was the ignitor of the town's recycling program.
    • That first small donation was the ignitor for a huge fundraising campaign.
    • The book served as an ignitor for her interest in marine biology.
Synonyms