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.
Sunspots are associated with strong magnetic fields that prevent hot plasma from rising from within the sun. Paul Smaglik, Discover Magazine, 24 Apr. 2025 The Earth's magnetic field guides the electrons so that the aurora forms two ovals centered around the magnetic poles. Ross Rosenfeld, MSNBC Newsweek, 22 Apr. 2025 Occasionally, the magnetic field’s north and south poles swap completely—a natural phenomenon that has taken place about 180 times in Earth’s history. Margherita Bassi, Smithsonian Magazine, 21 Apr. 2025 These satellites measure the solar wind’s speed and magnetic intensity, allowing forecasters to calculate how the solar wind will affect Earth’s magnetic field. Jamie Carter, Forbes.com, 20 Apr. 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 2 May. 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

Last Updated: - Updated example sentences
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