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

However, not all cats like other felines, and some seniors may particularly dislike the difference in energy levels with their younger siblings. —Kristan Hawkins, Newsweek, 6 Feb. 2025

Still, proteins are indirectly involved in many aspects of the body’s energy levels in the long term. —Laura Dorwart, Verywell Health, 3 Feb. 2025

Don’t just mark the days of your period; also take note of symptoms and energy levels throughout a few entire cycles to gain insight into how the phases may affect your training, Dr. Rosenkranz says. —Lauren Mazzo, SELF, 28 Jan. 2025

Fueling your body with nutritious snacks between meals is important for keeping your energy levels stable and can provide your body with nutrients known to support and protect heart health. —Jillian Kubala, Rd, Health, 27 Jan. 2025

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