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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Known as warm dense matter, this extreme form of matter shapes how planets generate magnetic fields and how nuclear fusion unfolds. Rupendra Brahambhatt, Interesting Engineering, 20 Dec. 2025 The torn magnetic fields quickly reconnected, forming giant loops, some of which continued traveling outward while others retracted back toward the sun, dragging blobs of solar material along in a process known as inflows. Sharmila Kuthunur, Space.com, 16 Dec. 2025 The movement of the iron-rich liquid induces a magnetic field that covers the entire Earth. Scott Brame, The Conversation, 16 Dec. 2025 The models then scour huge amounts of data — everything from rock composition to magnetic fields — to find patterns that point to the existence of geothermal reserves. Laura Paddison, CNN Money, 12 Dec. 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 22 Dec. 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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