phanotron

noun

phan·​o·​tron

variants or less commonly phanatron

ˈfanə‧ˌträn

plural -s

: a low-pressure diode filled with mercury vapor or an inert gas and used as a rectifier for radio transmitters and industrial direct current power

Word History

Etymology

perhaps from Greek phano- showing (from phainein to show) + English -tron

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