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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Once inside, the micro-robots are guided by magnetic fields to reach the infected area. Kurt Knutsson, FOXNews.com, 7 July 2025 Since the mid-1990s, when the first exoplanets were discovered, astronomers have pondered whether exoplanets can orbit their stars closely enough that stellar magnetic fields are impacted. Robert Lea, Space.com, 2 July 2025 These objects are very dense remnants of dead stars with powerful magnetic fields. Jacopo Prisco, CNN Money, 30 June 2025 The origin of Earth’s magnetic field is not yet fully understood. David Bressan, Forbes.com, 30 June 2025 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 12 Jul. 2025.

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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