igniter

noun

ig·​nit·​er

variants or ignitor

-ītə(r) 

plural -s

: one that ignites: such as

a

: a charge usually of black gunpowder used to facilitate the ignition of a propelling charge and sometimes of a bursting charge

b

: a device for igniting fuel mixture (as in an internal-combustion engine, a jet engine, or a rocket engine)

c

: a separately energized electrode used for restriking the arc in an ignitron

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