energy
n.-
1 human vitality (n.) A2 Elementarythe strength and power you have to do things without getting tired.
the capacity for vigorous activity or the exertion of power.
ExampleI usually have more energy in the morning after a good sleep.
ExampleThe young volunteers brought a great deal of energy to the project, completing the renovation weeks ahead of schedule.
- lethargy
- fatigue
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2 power sources (n.) A2 Elementarypower from things like oil, coal, or the sun that we use for light and heat.
usable power derived from physical or chemical resources, especially to provide light and heat or to work machines.
ExampleThe government is trying to use more green energy like wind and solar power.
ExampleThe industrial sector consumes a significant percentage of the nation's total energy, leading to calls for more efficient manufacturing processes.
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3 scientific capacity (n.) B2 Upper Intermediate Academic Technical Sciencethe ability of a physical system to do work.
the property of matter and radiation which is manifest as a capacity to perform work, such as causing motion or interaction.
ExampleIn physics, we learned that energy cannot be destroyed, only changed.
ExampleKinetic energy is the energy an object possesses due to its motion, calculated as one-half of its mass times the square of its velocity.
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4 vibe or atmosphere (n.) B2 Upper Intermediate Informalthe feeling or mood that a person or place gives you.
the perceived emotional quality or atmosphere emanating from a person, place, or situation.
ExampleI didn't like the energy in that room; everyone seemed very angry.
ExampleThe team's collective energy shifted from anxiety to determination as soon as the captain delivered her pre-match speech.
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5 gaming resource (n.) B1 Intermediate Informal Computinga limited number of points a character can use to perform actions in a game.
a quantifiable resource in game mechanics that limits the number of actions a player or unit can perform within a specific timeframe.
ExampleMy character ran out of energy, so I had to wait for it to refill before attacking again.
ExamplePlayers must manage their energy bars carefully, as high-damage abilities consume more resources than standard defensive maneuvers.
From Middle French énergie, from Late Latin energia, from Ancient Greek ἐνέργεια (enérgeia, “activity”), from ἐνεργός (energós, “active”), from ἐν (en, “in”) + ἔργον (érgon, “work”). The sense in physics was coined by English polymath Thomas Young in 1802 in his lectures on Natural Philosophy.