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.
The award recognizes the work of the trio – Seong-Moo Yang, SangKyeun Kim and Ricardo Shousha – in optimizing 3D magnetic fields within tokamaks to control edge instabilities to improve plasma confinement. Aman Tripathi, Interesting Engineering, 27 Dec. 2025 Quantum bits are inherently fragile and thus sensitive to all kinds of environmental factors, such as electric or magnetic fields, mechanical vibrations, or even cosmic rays. IEEE Spectrum, 23 Dec. 2025 The torn magnetic fields quickly reconnected, forming giant loops, some of which continued traveling outward while others retracted back toward the sun, dragging blobs of solar material along in a process known as inflows. Sharmila Kuthunur, Space.com, 16 Dec. 2025 The movement of the iron-rich liquid induces a magnetic field that covers the entire Earth. Scott Brame, The Conversation, 16 Dec. 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 30 Dec. 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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!