ignītˈable or ignītˈible adjective

ignītˈer noun

Someone who or something that ignites, eg an apparatus for firing an explosive or explosive mixture

ignition /-nishˈən/ noun

1. An act of igniting
2. A means of igniting
3. The state of being ignited
4. The firing system of an internal-combustion engine

igˈnitron (or /ig-nīˈtron/) noun

A device for conducting current in which an electrode dips into a pool of mercury and draws up an arc to start ionization

ignition key noun

In a motor vehicle, the key which is turned to operate the ignition system

ignition temperature noun

The temperature at which a substance will ignite in air