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A battery

American

noun

Electronics.

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

A battery stores power in the form of chemical energy and through reactions converts it to the electrical energy needed to power vehicles as well as cellphones, laptops and many other devices and machines.

From Science Daily

A battery made from zinc and lignin that can be used over 8000 times.

From Science Daily

Unfortunately, when a pacemaker battery fades, you can’t just go to the drug store for a Double A battery.

From Los Angeles Times

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

From Seattle Times

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023