ˈāˌ- noun
Usage: usually capitalized A
: a battery used to heat the filaments or cathode heaters of electron tubes — called also filament battery ; compare b battery
ˈāˌ- noun
Usage: usually capitalized A
: a battery used to heat the filaments or cathode heaters of electron tubes — called also filament battery ; compare b battery
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012