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.
Nor were the head direction cells anchoring themselves to the Earth’s magnetic field, as some preliminary experiments by Ulanovsky’s team had suggested. Yasemin Saplakoglu, Quanta Magazine, 21 Jan. 2026 The northern lights appeared to fill the entire sky, saturating the scene with vivid curtains of color dancing to the whims of Earth's magnetic field. Daisy Dobrijevic, Space.com, 21 Jan. 2026 The northern lights, which is officially known as the aurora borealis, is a natural phenomenon that projects colorful lights in the night sky as a result of an interaction between the sun's plasma and Earth's magnetic field, according to the National Weather Service. Melina Khan, USA Today, 20 Jan. 2026 The aurora was spawned from a coronal mass ejection, known as a CME, which created a strong geomagnetic storm in Earth’s magnetic fields. Cnn.com Wire Service, Mercury News, 20 Jan. 2026 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 24 Jan. 2026.

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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