magnetic moment

noun

: 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 Its value is determined mostly by the magnetic moment of the bare electron field; the largest changes arise from the electromagnetic field, and they can be calculated with astonishing precision. Luke Caldwell, Scientific American, 1 Feb. 2024 On the one hand, the atoms inside iron germanium have magnetic moments that tend to want to align with their neighbors. IEEE Spectrum, 23 Dec. 2023 On the other hand, the structure of the crystal itself motivates the magnetic moments to rotate with respect to their neighbors. IEEE Spectrum, 23 Dec. 2023 As the sun set brilliantly over the Caribbean Sea, those were magnetic moments that had returned as a timely cue to appreciate the raw beauty of kindness. Tenille Clarke, Essence, 21 Dec. 2023 The magnetic moment is affected by a menagerie of virtual particles that continuously pop in and out of existence. Cody Cottier, Discover Magazine, 21 June 2021 Making progress on this vexing problem boils down to better calculations and more precise measurements of the muon’s magnetic moment. Daniel Garisto, Scientific American, 10 Aug. 2023 On Thursday researchers announced the latest measurement milestone, which pins down the muon’s magnetic moment to an error of just one part in five million. Daniel Garisto, Scientific American, 10 Aug. 2023 Many years in the making, the experiment aimed to achieve very, very good measurements of the behavior of something called the magnetic moment of a muon. Jackie Appel, Popular Mechanics, 15 Aug. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'magnetic moment.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1865, in the meaning defined above

Time Traveler
The first known use of magnetic moment was in 1865

Dictionary Entries Near magnetic moment

Cite this Entry

“Magnetic moment.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/magnetic%20moment. Accessed 22 Jun. 2024.

Medical Definition

magnetic moment

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

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