ig·ni·tion 
/ɪgˈnɪʃən/ noun
plural ig·ni·tions /ɪgˈnɪʃən/ noun 1 [count] a : the electrical system in an engine that causes the fuel to burn so that the engine begins working
▪ There's a problem with the car's ignition.
b : the device that is used to start a car's engine — usually singular ▪ Put the key in the ignition. ▪ Turn on/off the ignition. — see picture at car 2 [noncount] : the act of causing something to start burning : the act of igniting something
▪ ignition of the fire
▪ There's a problem with the car's ignition.
b : the device that is used to start a car's engine — usually singular ▪ Put the key in the ignition. ▪ Turn on/off the ignition. — see picture at car
▪ ignition of the fire
