energy level

noun

: one of the stable states of constant energy that may be assumed by a physical system

—used especially of the quantum states of electrons in atoms and of nuclei

called also energy state

Examples of energy level in a Sentence

Recent Examples on the Web

My mind felt clearer, my energy levels soared and, most surprisingly, my ability to think creatively and solve problems improved dramatically. —Nik Ershov, Forbes, 10 Sep. 2024

Mir observed a noticeable improvement in cognitive function and energy levels, with their resting heart rate reverting to pre-COVID levels. —Asmae Fahmy, Verywell Health, 6 Sep. 2024

The nucleus of this atom has two quantum states that are much closer together in energy level, so a smaller kick is needed to jump between them. —Michael Irving, New Atlas, 5 Sep. 2024

The lights were low and the energy level was sky-high. —Ryan Slattery, Travel + Leisure, 2 Sep. 2024

Word History

First Known Use

1902, in the meaning defined above

Kids Definition

energy level

noun

: one of the stable states of constant energy that may be assumed by a physical system

—used especially of the states of electrons in atoms