energy level

American  

[en-er-jee lev-uhl] / ˈɛn ər dʒi ˌlɛv əl /

noun

1. a comparative level of capacity for vigorous activity.

   The child has a high energy level.

2. Also called energy state.  Physics. one of a quantized series of states in which matter may exist, each having constant energy and separated from others in the series by finite quantities of energy.

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energy level British  

noun

1. a constant value of energy in the distribution of energies among a number of atomic particles

2. the energy of a quantum state of a system. The terms energy level and energy state are often used loosely to mean quantum state . This is avoided in precise communication

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Etymology

Origin of energy level

First recorded in 1905–10

Example Sentences

See Examples For:

energy level

In 2023, scientists detected a subatomic particle called a neutrino hitting Earth with an energy level so extreme it seemed impossible.

From Science Daily ● Apr. 8, 2026

My second point is to make it equal to your energy level.

From Los Angeles Times ● Apr. 8, 2026

“It will definitely ramp up the energy level for Trump supporters,” he said.

From Slate ● Jul. 16, 2024

First, WS2 absorbs light by sending an electron to a higher energy level.

From Science Daily ● May 30, 2024

All of the factors—disposition, energy level, intelligence, and interests—had to correspond and to interact perfectly.

From "The Giver" by Lois Lowry