angular momentum

noun

: a vector quantity that is a measure of the rotational momentum of a rotating body or system, that is equal in classical physics to the product of the angular velocity of the body or system and its moment of inertia with respect to the rotation axis, and that is directed along the rotation axis

Examples of angular momentum in a Sentence

Recent Examples on the Web

Like other subatomic particles, protons possess a quantum property called spin, akin to classical angular momentum. —David Schneider, IEEE Spectrum, 25 Nov. 2025

Angular Momentum There’s one more thing to think about: angular momentum (L). —Rhett Allain, Wired News, 14 Nov. 2025

As these orbiting black holes emit gravitational waves, their orbits tighten due to the loss of angular momentum from the system. —Robert Lea, Space.com, 14 Sep. 2025

Using an advanced X-ray technique, the team was able to measure the flow of angular momentum through a material without an electrical charge. —Aman Tripathi, Interesting Engineering, 11 Sep. 2025

Word History

First Known Use

1817, in the meaning defined above

Rhymes for angular momentum

• argumentum
• sacramentum
• testamentum
• cementum
• omentum
• tegmentum
• tomentum
• centum
• mentum