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A battery

  • noun
  • ˈāˌ-

Definition of A battery
: a battery used to heat the filaments or cathode heaters of electron tubes — called also filament battery ; compare b battery


A battery

  • noun
  • ˈāˌ-

Definition of A battery
: a battery used to heat the filaments or cathode heaters of electron tubes — called also filament battery ; compare b battery