ig·ni·tron
| \ ig-ˈnī-ˌträn
\
\
Definition of ignitron
: a mercury-containing rectifier tube in which the arc is struck again at the beginning of each cycle by a special electrode separately energized by an auxiliary circuit
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“Ignitron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ignitron. Accessed 17 May. 2021.
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Time Traveler for ignitron
The first known use of ignitron was in 1933
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