geomagnetic

adjective

geo·​mag·​net·​ic ˌjē-ō-mag-ˈne-tik 

: of or relating to terrestrial magnetism

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

The Northern Lights may be visible in the U.S. this week, according to the National Oceanic and Atmospheric Administration’s Space Weather Prediction Center, which is predicting geomagnetic activity that could result in aurora being glimpsed in as many as 11 U.S. states on Sunday, May 4, 2025. —Jamie Carter, Forbes.com, 3 May 2025

Aurorae manifest as curtains of light that trace the geomagnetic field lines and can vary in color depending on the species of atom being excited. —Barbara A. Perry, Newsweek, 28 Jan. 2025

Stronger solar cycles produce more solar storms with greater intensity, which fuels geomagnetic activity. —Ross Rosenfeld, MSNBC Newsweek, 22 Apr. 2025

There are forecasts that the phenomenon will be visible as far south as mid-northern latitudes in the U.S. and Europe on Wednesday, April 16, in the wake of a few nights of intense geomagnetic activity. —Jamie Carter, Forbes.com, 16 Apr. 2025

Word History

First Known Use

1904, in the meaning defined above

Phrases Containing geomagnetic

• geomagnetic storm

Rhymes for geomagnetic

• alphabetic
• anaesthetic
• anesthetic
• antithetic
• apathetic
• arithmetic
• cybernetic
• diabetic
• dietetic
• diuretic
• empathetic
• energetic

Kids Definition

geomagnetic

adjective

geo·​mag·​net·​ic ˌjē-ō-mag-ˈnet-ik 

: of or relating to the magnetism of the earth

geomagnetism

-ˈmag-nə-ˌtiz-əm 

noun