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

New research suggests that a protein the body relies on to manage appetite and energy levels cannot function on its own.

From Science Daily

These interactions can produce small shifts in atomic energy levels, and quantum spin sensors detect those shifts as pseudomagnetic fields.

From Science Daily

"In these semiconductor islands, certain fixed energy levels are present, just like in an atom," says Strobel.

From Science Daily

These revived cells not only showed improved energy levels but also became more resistant to cell death, even when they were later exposed to damaging treatments such as chemotherapy.

From Science Daily

Dr Munro recommends following a diet similar to the Mediterranean one that is rich in protein, healthy fats and complex carbs which can help stabilise your energy levels.

From BBC