A key that starts the combustion engine of a motor vehicle.

Third-person singular simple present indicative form of self-ignite

present participle of self-ignite

(intransitive) To catch fire due to sufficient temperature.

simple past tense and past participle of self-ignite

Alternative form of autoignition temperature

plural of ignition coil

(inorganic chemistry) An analytical technique in which a sample is heated in a sealed tube, volatile metals being removed by sublimation to a cooler part of the tube from where they can be removed and weighed

plural of ignition tube test

(automotive) A type of extended-Brayton-cycle-based two-stroke engine which uses four cylinders for a combustion cycle of four strokes, but having a power stroke rate of that on regular two-stroke cycles.