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noun

energy

CEFR B2

(physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs

In a sentence

Six example sentences with energy, each labelled with its topic.

  • A falling hammer arrives with the energy it gained on the way down, which is why the nail moves.

    Science

  • A single turbine sweeps enough air each second to deliver energy for roughly six hundred homes on a windy day.

    Environment

  • Engineers measure the energy a chip consumes per operation, because a data center's cooling bill scales directly with that number.

    Technology

  • When gas prices doubled, the cost of energy rippled into bread, since ovens and delivery trucks both run on it.

    Economics

  • A marathoner's body draws energy first from stored glycogen and then, when that runs low, from fat.

    Fitness

  • The energy bill promised cheaper power by 2030, but the debate stalled on who would pay for the new lines.

    Politics

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Found in these word lists

Found in 9 published word listsAuthoritative

Each source is a published word list that contains energy. No exam board publishes an official GRE, GMAT or SAT list; GMAT words come from GRE lists and the Academic Word List.