energy

Meanings

1. 1
   noun

   an imaginative lively style, especially style of writing

   The author's writing conveys great energy.

2. 2
   noun

   enterprising or ambitious drive

   Europeans often laugh at American energy

3. 3
   noun

   forceful exertion

   I play tennis with great energy.

4. 4
   noun

   any source of usable power

   the DOE is responsible for maintaining the energy policy

5. 5
   noun

   (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work

   the units of energy are joules or ergs

6. 6
   noun

   a healthy capacity for vigorous activity

   jogging works off my excess energy

7. 7
   noun

   The impetus behind all motion and all activity.

   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?

8. 8
   noun

   The capacity to do work.

   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.

Etymology

Etymology tree Proto-Indo-European *h₁én Ancient Greek ἐν (en) Ancient Greek ἐν- (en-) Proto-Indo-European *werǵ- Proto-Indo-European *-om Proto-Indo-European *wérǵom Proto-Hellenic *wérgon Ancient Greek ἔργον (érgon) Proto-Indo-European *-os Proto-Hellenic *-os Ancient Greek -ος (-os) Ancient Greek ἐνεργός (energós) Proto-Indo-European *-os Proto-Indo-European *-ēs Ancient Greek -ης (-ēs) Ancient Greek -ής (-ḗs) Ancient Greek ἐνεργής (energḗs) Proto-Indo-European *-h₂ Proto-Indo-European *-ih₂der. Ancient Greek -ιᾰ (-iă) Ancient Greek ἐνέργεια (enérgeia)bor. Late Latin energīader. Middle Fren…