ignition

詳細解釋：

ig.ni.tion

n.（名詞）
The raising of a substance to its ignition point, as by electric current, friction, or mechanical shock.
點火：通過電流、磨擦或機械碰撞使物質達到其燃點
Abbr. ign.
縮寫 ign.
An electrical system, typically powered by a battery or magneto, that provides the spark to ignite the fuel mixture in an internal-combustion engine.
發火裝置，點火器：一種用電池或永磁發電機起動的電子裝置，用來產生火花點燃內燃機中的混合燃料
A switch that activates this system.
點火開關：用來啟動發火裝置的開關