Definition of ignition
1 : the act or action of igniting: such asa : the starting of a fireb : the heating of a plasma to a temperature high enough to sustain nuclear fusion
2a : the process or means (such as an electric spark) of igniting a fuel mixtureb : a device that activates an ignition system (as in an automobile) put the key in the ignition
Examples of ignition in a Sentence
There's a problem with the car's ignition.
First Known Use of ignition
IGNITION Defined for English Language Learners
Definition of ignition for English Language Learners
: 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
IGNITION Defined for Kids
Definition of ignition for Students
1 : the act of causing something to start burning
2 : the process or means (as an electric spark) of causing the fuel in an engine to burn so that the engine begins working
3 : a device that is used to start a motor vehicle Put the key in the ignition.
Seen and Heard
What made you want to look up ignition? Please tell us where you read or heard it (including the quote, if possible).