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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Bright looping structures can be seen playing throughout the sun's atmosphere in the ultraviolet realm of the electromagnetic spectrum as plasma is shaped by our star's strong magnetic field while the moon's silhouette roams left-to-right across the solar disk. Anthony Wood, Space.com, 18 Feb. 2026 The science payload to be landed there includes seismometers, a drill to allow emplacement of heat flow and electrical conductivity probes, and instruments to study the magnetic field and surface weathering. Richard Tribou, The Orlando Sentinel, 16 Feb. 2026 If that magnetic field interacts with a permanent magnet, motion happens. Rupendra Brahambhatt, Interesting Engineering, 15 Feb. 2026 This change interacts with the magnets, increasing their magnetic field, and initiating a flow of new electricity through the coils. Jordan Blum, Fortune, 13 Feb. 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 22 Feb. 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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