geo·​mag·​net·​ic | \ˌjē-ō-mag-ˈne-tik \

Definition of geomagnetic 

: of or relating to terrestrial magnetism

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Other Words from geomagnetic

geomagnetically \ ˌjē-​ō-​mag-​ˈne-​ti-​k(ə-​)lē \ adverb
geomagnetism \ ˌjē-​ō-​ˈmag-​nə-​ˌti-​zəm \ noun

Examples of geomagnetic in a Sentence

Recent Examples on the Web

If a high level of geomagnetic activity is present in the sky, the northern lights will be visible to spectators. Susan Selasky And Emma Tomsich, Detroit Free Press, "Strawberry moon, Saturn to light up sky tonight," 27 June 2018 The threat comes from solar storms, those occasional eruptions of vast amounts of energy that can cause a massive spike in geomagnetic activity and radiation. Kyle Stock,, "Too Much Sun Could Wreak Havoc on Driverless Cars," 16 Mar. 2018 While this storm is pretty predicable, the impact of bigger geomagnetic events can be tough to figure out. Jason Daley, Smithsonian, "Earthlings: There’s No Need to Freak Out About Tonight’s Solar Storm," 14 Mar. 2018 The Soviets and Americans also worked together to further space exploration in the 1960s and 1970s—exchanging weather data from and launching new meteorologic satellites and jointly mapping the earth's geomagnetic field. The Editors, Scientific American, "Science Diplomacy Is More Vital Than Ever," 1 June 2017 The geomagnetic storm quickly turned into a Twitter storm, with people posting photos and videos of the famous Lights. Caitlin Morton, CNT, "The Northern Lights Just Appeared in Michigan," 18 July 2017 Michiganders across the state were treated to a rare July northern lights show over the past few days thanks to a geomagnetic storm from the sun. Brian Manzullo, Detroit Free Press, "Northern lights dazzle across Michigan skies," 18 July 2017 The lights are expected to come as the result of a geomagnetic storm caused by giant clouds of solar plasma produced by solar flares. Olivia Dimmer,, "Driver seriously injured after crash with train in Marion County," 14 July 2017 A geomagnetic storm triggered by a burst of solar energy could overwhelm the nation’s power grid and shut down cell towers and communication networks. NBC News, "How We'll Safeguard Earth From a Solar Storm Catastrophe," 8 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'geomagnetic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of geomagnetic

1904, in the meaning defined above

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The first known use of geomagnetic was in 1904

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More Definitions for geomagnetic


geo·​mag·​net·​ic | \ˌjē-ō-mag-ˈne-tik \

Kids Definition of geomagnetic

: of or relating to the magnetic field of the earth the geomagnetic field

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to clear from alleged fault or guilt

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