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 solar flares also can unleash multiple coronal mass ejections, which often are observed as geomagnetic activity that can trigger a beautiful display of auroras. —Mary Wasson, Austin American Statesman, 5 Feb. 2026

If geomagnetic activity intensifies, visibility could range from high-latitude regions to farther south, but precise locations are not yet known. —Valerie Mesa, PEOPLE, 3 Feb. 2026

More reliable forecasts of solar activity could help protect satellites, reduce risks to navigation systems, and give power grid operators advance warning of geomagnetic disturbances. —Rupendra Brahambhatt, Interesting Engineering, 1 Feb. 2026

This colorful reaction occurs in a donut shape above the geomagnetic poles. —Stephanie Vermillion, Outside, 27 Jan. 2026

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