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.
Topline High-speed winds from a cooler, less dense spot on the sun’s surface may continue disrupting Earth’s magnetic field on Saturday, as more than a dozen states could have a chance to see the northern lights, according to the National Oceanic and Atmospheric Administration. Ty Roush, Forbes.com, 6 Sep. 2025 For the uninitiated, the Hall effect, first discovered in 1879 by Edwin Hall, is a phenomenon where an electric current flowing through a conductor or semiconductor in the presence of a magnetic field produces a voltage across the material. Christopher McFadden, Interesting Engineering, 6 Sep. 2025 Over time, the gamma-ray flux from the Moon fluctuates by about 20% due to these periodic changes in the Sun’s magnetic field. Ethan Siegel, Big Think, 4 Sep. 2025 Solar flares are powerful bursts of energy from the Sun's magnetic field and a regular feature of solar activity. Melissa Fleur Afshar, MSNBC Newsweek, 3 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 7 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

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