Definition of ignition
- put the key in the ignition
There's a problem with the car's ignition.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ignition.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: the electrical system in an engine that causes the fuel to burn so that the engine begins working
: the device that is used to start a car's engine
: the act of causing something to start burning : the act of igniting something
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