magnetic field

noun

: the portion of space near a magnetic body or a current-carrying body in which the magnetic forces due to the body or current can be detected

Examples of magnetic field in a Sentence

Recent Examples on the Web
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The company says its CoSMo fusion systems are based on the magnetic mirror concept, which uses magnetic fields to confine high-temperature plasma. Neetika Walter, Interesting Engineering, 16 July 2026 Astronomers had long suspected this unusual structure traced energetic electrons escaping along the Milky Way's magnetic field. Samantha Mathewson, Space.com, 14 July 2026 Magnotherm, a spinoff from the Technical University of Darmstadt, is using magnetic fields in refrigerators and will test its prototype in a German supermarket chain later this year before taking on air-conditioning. Sabrina Weiss, ArsTechnica, 10 July 2026 That should make Earth’s magnetic field more disturbed than usual, with mostly unsettled or active conditions and a chance of brief G1 geomagnetic storms. Jamie Carter, Forbes.com, 10 July 2026 See All Example Sentences for magnetic field

Word History

First Known Use

1845, in the meaning defined above

Time Traveler
The first known use of magnetic field was in 1845

Browse Nearby Words

Cite this Entry

“Magnetic field.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/magnetic%20field. Accessed 18 Jul. 2026.

Kids Definition

magnetic field

noun
: the portion of space near a magnetic body or a body carrying an electric current within which magnetic forces due to the body or current can be detected

Medical Definition

magnetic field

noun
: the portion of space near a magnetic body or a current-carrying body in which the magnetic forces due to the body or current can be detected
the magnetic field of the heart

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