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
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In addition to seeing stronger hair over time, she’s noticed that adding this formula to her regimen has helped improve her energy levels and balance her hormone levels. Emily Orofino, Vogue, 4 Mar. 2026 All of these subtle discomforts can lead to more tossing and turning, creating a ripple effect that disrupts your sleep and your energy level the following day. Kate Van Pelt, The Spruce, 3 Mar. 2026 Your body’s circadian rhythm affects your sleep quality and daytime energy levels. Carrie Madormo, Verywell Health, 26 Feb. 2026 Drinks high in iron made with cocoa, pea protein, prunes, dark leafy greens, and nut butters can help support better energy levels. Carley Millhone, Health, 26 Feb. 2026 See All Example Sentences for energy level

Word History

First Known Use

1902, in the meaning defined above

Time Traveler
The first known use of energy level was in 1902

Cite this Entry

“Energy level.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/energy%20level. Accessed 11 Mar. 2026.

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

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