energy

Language: EN · Kind: word · Transcription: [/ˈɛnəd͡ʒi/]

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Senses

1. energy (noun) — sense 1

Definition: The impetus behind all motion and all activity.

Example: A “moving platform” scheme[…]is more technologically ambitious than maglev trains even though it relies on conventional rails.[…]This set-up solves several problems […]. Stopping high-speed trains wastes energy and time, so why not simply slow them down enough for a moving platform to pull alongside?

2. energy (noun) — sense 2

Definition: The capacity to do work.

Example: There is an hour or two, after the passengers have embarked, which is disquieting and fussy.[…]Stewards, carrying cabin trunks, swarm in the corridors. Passengers wander restlessly about or hurry, with futile energy, from place to place.

3. energy (noun) — sense 3

Definition: A quantity that denotes the ability to do work and is measured in a unit dimensioned in mass × distance²/time² (ML²/T²) or the equivalent.

Example: SI: joule (J), kilowatt-hour (kW·h)
CGS: erg (erg)
Customary: foot-pound-force, calorie, kilocalorie (i.e. dietary calories), BTU, liter-atmosphere, ton of TNT

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