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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
These HDDs use the company’s Mozaic 3+ heat assisted magnetic recording, HAMR, technology, where lasers are used to reduce the magnetic fields from the write head required to write a high-densities on stable high coercivity magnetic recording media.
—Thomas Coughlin, Forbes, 21 Jan. 2025
View Comments Earth’s magnetic field has behaved even more dramatically in the past, with the magnetosphere weakening so much that its polarity reversed.
—Mindy Weisberger, CNN, 21 Jan. 2025
During solar minimum, the sun's magnetic field is close to a dipole, with one north pole and one south pole, similar to Earth's magnetic field.
—Daisy Dobrijevic, Space.com, 15 Jan. 2025
By catching the X-rays that are created as solar winds smash into the magnetopause, these satellites and other instruments have seen the outlines of the magnetic field.
—Sam Walters, Discover Magazine, 7 Jan. 2025
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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 26 Jan. 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
Nglish: Translation of magnetic field for Spanish Speakers
Britannica.com: Encyclopedia article about magnetic field
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