A battery

noun

A battery

noun

1

Business, Electrical engineering, Electricity, Electromagnetism, Electronics, Energy, Engineering, Natural sciences, Physical sciences, Physics Dated A battery used to heat the filament or cathode heaters of electron tubes.

Synonyms: filament battery
Related terms: B battery, C battery

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.