1.the ignition
(on steering column, dashboard etc)(汽车的)点火开关
2.(part of engine)(汽车引擎或内燃机的)点火装置, 点火器
The device automatically disconnects the ignition.这个装置会自动使点火器断开。
an electronic ignition电子点火装置
3.(engine fuel-igniting process)(内燃机的)点火程序
4.(involving fire)+of gas点燃；燃烧
an explosion caused by the ignition of toxic gases有毒气体燃烧引起的爆炸