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 best viewing window is expected late Friday night, April 10, through the early hours of Saturday, April 11, when geomagnetic activity linked to the incoming solar wind stream is forecast to peak. —Valerie Mesa, PEOPLE, 10 Apr. 2026

If geomagnetic activity briefly intensifies beyond forecast levels, auroras could extend slightly farther south into parts of states such as New York, Vermont and New Hampshire. —Jamie Carter, Forbes.com, 26 Mar. 2026

While the weekend's geomagnetic activity is beginning to wind down, the show may not be completely over yet. —Daisy Dobrijevic, Space.com, 23 Mar. 2026

By Saturday night, geomagnetic activity weakens and retreats north, making aurora visibility in Iowa unlikely or very limited. —Lucia Cheng, Des Moines Register, 20 Mar. 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