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

This weekend, a high-speed stream of solar wind may escalate geomagnetic activity, resulting in auroras as far south as Idaho and New York, says the SWPC. —Michele Laufik, Martha Stewart, 16 Apr. 2026

While recent solar conditions have been relatively calm, forecasters note subtle shifts in solar wind patterns that could enhance geomagnetic activity just enough to bring the aurora farther south than usual. —Valerie Mesa, PEOPLE, 16 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

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