magnetic moment

noun

Definition of magnetic moment

: a vector quantity that is a measure of the torque exerted on a magnetic system (such as a bar magnet or dipole) when placed in a magnetic field and that for a magnet is the product of the distance between its poles and the strength of either pole

Examples of magnetic moment in a Sentence

Recent Examples on the Web In that model, magnetic moments are arranged in a grid, where each atom's moment can only interact with—and potentially change—the moment of a next-door neighbor. Meredith Fore, WIRED, "Magnetic Materials Help Explain How Arctic Ice Melts," 5 July 2019 But on the quantum level, magnetic moments can fluctuate. David Grossman, Popular Mechanics, "Looks Like We Have a New Material State," 5 Sep. 2019 Because of the uneven number of particles in the nucleus, helium three has a strong magnetic moment. The helium is put into a state where all the magnets point in the same direction, creating what is called magnon. Chris Lee, Ars Technica, "Magnetic helium makes superfluid time crystal," 2 June 2018 But, as the rock cools, the magnetic moment from all the iron atoms begin to line up, thanks to the Earth's magnetic field. Chris Lee, Ars Technica, "Plugging in to a volcano: Geothermal power and the science that enables it," 11 Oct. 2017 The magnets misalign, reducing the magnetic moment of the rocks. Chris Lee, Ars Technica, "Plugging in to a volcano: Geothermal power and the science that enables it," 11 Oct. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'magnetic moment.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of magnetic moment

1865, in the meaning defined above

Keep scrolling for more

Learn More about magnetic moment

Time Traveler for magnetic moment

Time Traveler

The first known use of magnetic moment was in 1865

See more words from the same year

Statistics for magnetic moment

Cite this Entry

“Magnetic moment.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/magnetic%20moment. Accessed 26 Nov. 2020.

Keep scrolling for more

More Definitions for magnetic moment

magnetic moment

noun
magnetic mo·​ment | \ -ˈmō-mənt How to pronounce magnetic moment (audio) \

Medical Definition of magnetic moment

: a vector quantity that is a measure of the torque exerted on a magnetic system (as a bar magnet or dipole) when placed in a magnetic field and that for a magnet is the product of the distance between its poles and the strength of either pole

More from Merriam-Webster on magnetic moment

Britannica.com: Encyclopedia article about magnetic moment

Comments on magnetic moment

What made you want to look up magnetic moment? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

A Thanksgiving Word Quiz

  • a traditional thanksgiving dinner
  • November comes from a word for which of the following numbers?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!