[ig-nish-uh n] /ɪgˈnɪʃ ən/

the act or fact of ; state of being .
a means or device for .
(in an internal-combustion engine) the process that the fuel in the cylinder.
the act or process of initiating combustion
the process of igniting the fuel in an internal-combustion engine
the ignition, the devices used to ignite the fuel in an internal-combustion engine

1610s, “act of heating to the point of combustion,” from French ignition (16c.) or directly from Medieval Latin ignitionem (nominative ignitio), from Latin ignire “set on fire,” from ignis “fire” (see igneous). Meaning “means of sparking an internal combustion engine” is from 1881.

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  • Ignition key

    noun 1. the key used in a motor vehicle to turn the switch that connects the battery to the ignition system and other electrical devices

  • Ignition-point

    noun, Chemistry. 1. . ignition point (ĭg-nĭsh’ən) The minimum temperature at which a substance will continue to burn on its own without the application of additional external heat.

  • Ignition-system

    noun 1. the system in an internal-combustion engine that produces the spark to ignite the mixture of fuel and air: includes the battery, ignition coil, distributor, spark plugs, and associated switches and wiring.

  • Ignitron

    [ig-nahy-tron, ig-ni-tron] /ɪgˈnaɪ trɒn, ˈɪg nɪ trɒn/ noun, Electronics. 1. a cathode-arc vacuum tube with an auxiliary electrode projecting into a pool of mercury: it conducts current when the anode is positive. /ɪɡˈnaɪtrɒn; ˈɪɡnɪˌtrɒn/ noun 1. a mercury-arc rectifier controlled by a subsidiary electrode, the igniter, partially immersed in a mercury cathode. A current passed […]

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