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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Wireless systems also pose new safety risks, such as stray magnetic fields, fire hazards, and heating of metal objects, requiring further research and development (R&D) and stricter standardization. Atharva Gosavi, Interesting Engineering, 8 Nov. 2025 Several states appear above the view line for the aurora—light displays created when energetic particles from the sun interact with Earth's magnetic field and atmosphere—on the forecast map. Health Reporter, MSNBC Newsweek, 7 Nov. 2025 The sun's magnetic field reached its solar maximum phase of its 11-year cycle in October 2024, which has led to an increase in northern lights activity, according to NASA. Julia Jacobo, ABC News, 6 Nov. 2025 But in 2007, a detailed analysis demonstrated that Earth’s magnetic field actually, despite these limitations, does a remarkable job of shielding the Moon from the solar wind. Big Think, 6 Nov. 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 9 Nov. 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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