A battery

\ 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

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First Known Use of A battery

1917, in the meaning defined above

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The first known use of A battery was in 1917

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Cite this Entry

“A battery.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/A%20battery. Accessed 22 Apr. 2021.

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