Dictionary.com
Thesaurus.com

A battery

American  

noun

Electronics.
  1. an electric battery for heating the filament or cathode heater of an electron tube.


Etymology

Origin of A battery

First recorded in 1920–25

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A battery of physical and memory tests, baselined against individual pre-season scores, is used in unclear cases to decide whether a player has suffered a concussion or if they can return to the field.

From BBC • Aug. 6, 2025

A battery consists of two electrodes -- the anode and cathode, typically made of different materials -- as well as a separator and electrolyte, a chemical medium that allows for the flow of electrical charge.

From Science Daily • May 23, 2024

A battery can be charged flexibly, using renewable energy at times of the day with low demand for power, he said.

From Seattle Times • Oct. 24, 2023

A battery typically makes up around 40% of a new EV's price.

From Reuters • Oct. 23, 2023

A battery changed hands, it was somewhat too large, a metal flange was beaten back.

From "Snow Falling on Cedars: A Novel" by David Guterson

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "A battery" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com