geomagnetic

1 of 2

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

geomagnetism

2 of 2

noun

geo·​magnetism ¦jē(ˌ)ō + 

: terrestrial magnetism

Examples of geomagnetic in a Sentence

Recent Examples on the Web

Adjective

Around the spring and autumn equinoxes, geomagnetic activity tends to increase thanks in part to the Russell-McPherron effect. — Daisy Dobrijevic, Space.com, 23 Sep. 2026

When geomagnetic activity becomes stronger, the northern lights can sometimes be seen farther south than usual. — ABC News, 23 Sep. 2026

The Kp index is a numeric scale, ranging from zero to nine, that describes geomagnetic activity. — Michele Laufik, Martha Stewart, 23 Sep. 2026

This might be because the Integratron was apparently built on a geomagnetic vortex. — Anthony Solorzano, Los Angeles Times, 1 Sep. 2026

Word History

Etymology

Noun

ge- + magnetism

First Known Use

Adjective

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