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.
Thanks to the Russell-McPherron effect — when Earth’s and the sun’s magnetic fields connect most efficiently — geomagnetic storms tend to intensify around this time, producing an uptick in auroras. Jamie Carter, Forbes.com, 20 Sep. 2025 This design enables the metamaterial to switch between open and closed states when triggered by a magnetic field. Aamir Khollam, Interesting Engineering, 19 Sep. 2025 Once the target area is reached, an external magnetic field is applied to orient the sampling port of the capsule robot toward the intestinal fluid. IEEE Spectrum, 18 Sep. 2025 Auroras occur when solar wind interacts with Earth's magnetic field. Daisy Dobrijevic, Space.com, 17 Sep. 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 27 Sep. 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

More from Merriam-Webster on magnetic field

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