geomagnetic

1 of 2

adjective

geo·​mag·​net·​ic ˌjē-ō-mag-ˈne-tik How to pronounce geomagnetic (audio)
: of or relating to terrestrial magnetism
geomagnetically adverb
geomagnetism noun

geomagnetism

2 of 2

noun

geo·​magnetism ¦jē(ˌ)ō + How to pronounce geomagnetism (audio)

Examples of geomagnetic 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.
Adjective
If the solar storm arrives later in the forecast, the strongest geomagnetic activity could occur closer to — or even after — sunset for parts of North America, drastically improving viewing opportunities. Daisy Dobrijevic, Space.com, 8 June 2026 If geomagnetic activity spikes again, the aurora zone could stretch farther south into places like Oregon, Nebraska, Iowa, Illinois, Indiana, Ohio, Pennsylvania, Massachusetts, Connecticut, Rhode Island, Vermont and New Hampshire. Valerie Mesa, PEOPLE, 5 June 2026 These storms are known to have been seen as far south as Illinois or the 50° geomagnetic latitude. Ron Smiley, CBS News, 4 June 2026 There's also a possibility of isolated periods of G4 (severe) geomagnetic storming, depending on the CMEs' direction. Michele Laufik, Martha Stewart, 4 June 2026 See All Example Sentences for geomagnetic

Word History

Etymology

Noun

ge- + magnetism

First Known Use

Adjective

1904, in the meaning defined above

Time Traveler
The first known use of geomagnetic was in 1904

Browse Nearby Words

Cite this Entry

“Geomagnetic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/geomagnetic. Accessed 16 Jun. 2026.

Kids Definition

geomagnetic

adjective
geo·​mag·​net·​ic ˌjē-ō-mag-ˈnet-ik How to pronounce geomagnetic (audio)
: of or relating to the magnetism of the earth
geomagnetism noun
Love words? Need even more definitions?

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

More from Merriam-Webster