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

But that can sap an astronaut's energy levels for a long spacewalk. —Cybele Mayes-Osterman, USA TODAY, 15 July 2024

Many common prescriptions — from blood pressure medications to anti-depressants — can zap our energy levels. —Trisha Pasricha, Washington Post, 8 July 2024

Unlike glucose, which can cause fluctuations in energy levels and contribute to brain fog, ketones supply a stable and sustained energy source. —Lindsay Curtis, Health, 2 July 2024

The Republican messaging has at times veered into conspiratorial waters, with Trump and others suggesting any strong showing by Biden, similar to his energy level in his State of the Union address in March, would be due to performance-enhancing drugs. —Tal Axelrod, ABC News, 25 June 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