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.
Outside Earth’s protective magnetic field, astronauts are exposed to cosmic radiation, a constant shower of high-energy particles that can damage DNA and tissue. Kaif Shaikh, Interesting Engineering, 16 Oct. 2025 The disk has an intense magnetic field embedded in it. Phil Plait, Scientific American, 16 Oct. 2025 These electrons get a boost of energy in a region of Earth's magnetic field on the night side of the planet. Joe Edwards, MSNBC Newsweek, 16 Oct. 2025 The models also created layers of electrically conductive material, which can explain the magnetic fields of Uranus and Neptune. Paul Sutter, Space.com, 13 Oct. 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 21 Oct. 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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