- the act or process of initiating combustion
- the process of igniting the fuel in an internal-combustion engine
- the ignition ⇒ the devices used to ignite the fuel in an internal-combustion engine
WordReference Random House Learner's Dictionary of American English © 2026
ig•ni•tion /ɪgˈnɪʃən/USA pronunciation
n.
WordReference Random House Unabridged Dictionary of American English © 2026- the act of igniting or the state of being ignited:[uncountable]The Space Center announced, "We have ignition; we have liftoff.''
- Automotive (in an engine) the process, spark, or switch that ignites the fuel in the cylinder:[countable* usually singular]The ignition isn't working well.
ig•ni•tion
(ig nish′ən),USA pronunciation n.
- the act or fact of igniting;
state of being ignited. - a means or device for igniting.
- Automotive(in an internal-combustion engine) the process that ignites the fuel in the cylinder.
- Medieval Latin ignītiōn- (stem of ignītiō) a setting on fire. See ignite, -ion 1605–15
Collins Concise English Dictionary © HarperCollins Publishers::
ignition /ɪɡˈnɪʃən/ n