energy

Meanings

1. 1
   noun

   The strength and ability to be active without getting tired.

   Jogging in the morning works off my excess energy.

2. 2
   noun

   Power from sources such as electricity, gas, or fuel, used to make things work.

   The country is investing in clean energy to replace coal.

3. 3
   noun

   The physical quantity that gives a system the capacity to do work, measured in joules.

   In physics, energy can change form but is never destroyed.

Common collocations

• activation energy Noun + noun
• energy efficiency Noun + noun
• kinetic energy Adjective + noun
• youthful energy Adjective + noun

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…

Topics

External links

• Cambridge Dictionary
• Wiktionary
• Google Images