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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
That can change the shape of our planet’s magnetic field to create spectacular aurora displays.
—Jamie Carter, Forbes, 4 Nov. 2024
As auroras form, Earth's magnetic field redirects the particles toward the poles through a process that produces a stunning display of rays, spirals and flickers that have fascinated humans for millennia.
—Eric Lagatta, USA TODAY, 1 Nov. 2024
Another theory posits that the wiggling of Alfvén waves, oscillations in the Sun’s magnetic field that penetrate into the corona and turn back on themselves, can also inject energy into the solar wind.
—Byhannah Richter, science.org, 31 Oct. 2024
The first colonists would encounter a barren landscape without water or breathable atmosphere, bathed in deadly solar and galactic radiation from which Earthbound humans are protected by our planet’s atmosphere and magnetic field.
—Michael Hiltzik, Los Angeles Times, 16 Oct. 2024
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Word History
First Known Use
1845, in the meaning defined above
Dictionary Entries Near magnetic field
Cite this Entry
“Magnetic field.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/magnetic%20field. Accessed 21 Nov. 2024.
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
Nglish: Translation of magnetic field for Spanish Speakers
Britannica.com: Encyclopedia article about magnetic field
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