-
- To save this word, you'll need to log in.
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
It's believed to play an important role in maintaining the planet’s magnetic field.
—
Doyle Rice, USA TODAY, 14 Feb. 2025
But our planet’s magnetic field is far from static.
—
New Atlas, 13 Feb. 2025
This suggests sea turtles have two separate senses for perceiving magnetic fields.
—
Sarah Kuta, Smithsonian Magazine, 13 Feb. 2025
Earth’s magnetic field extends tens of thousands of miles into space on the planet’s sun-facing side, and even farther on the other side.
—
Dhruv Khullar, The New Yorker, 10 Feb. 2025
See all Example Sentences for magnetic field 
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.
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 21 Feb. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share