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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Protein intake supports overall, long-term energy levels by promoting tissue and cell growth and repair. Laura Dorwart, Verywell Health, 7 Jan. 2026 Your energy levels are all out of whack as the sun and moon clash! Usa Today, USA Today, 5 Jan. 2026 The calculations revealed that spin–spin interactions inside the diamond were dynamically repopulating the energy levels of the system. Rupendra Brahambhatt, Interesting Engineering, 4 Jan. 2026 Flagg scored only 10 points and shot 3-of-12 from the field, but no one would have guessed that from his demeanor, energy level and overall production. Brad Townsend, Dallas Morning News, 4 Jan. 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 12 Jan. 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

More from Merriam-Webster on energy level

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