Ignition

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early 17th century (denoting the heating of a substance to the point of combustion or chemical change): from medieval Latin ignitio(n- ), from the verb ignire ‘set on fire’ (see ignite).

wiktionary

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From French ignition

etymonline

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ignition (n.)

1610s, "act of heating to the point of combustion," from French ignition or directly from Medieval Latin ignitionem (nominative ignitio), noun of action from past-participle stem of Latin ignire "set on fire," from ignis "fire" (see igneous). Meaning "means of sparking a fire" (originally in a gun) is from 1881; meaning "means of sparking an internal combustion engine" is from 1906.