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geomagnetism

American  
[jee-oh-mag-ni-tiz-uhm] / ˌdʒi oʊˈmæg nɪˌtɪz əm /

noun

  1. the earth's magnetic field and associated phenomena.

  2. the branch of geophysics that studies such phenomena.

geomagnetism British  
/ ˌdʒiːəʊmæɡˈnɛtɪk, ˌdʒiːəʊˈmæɡnɪˌtɪzəm /

noun

  1. the magnetic field of the earth

  2. the branch of physics concerned with this

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
geomagnetism Scientific  
/ jē′ō-măg′nĭ-tĭz′əm /

  1. The magnetic properties of the Earth and its atmosphere.

  2. The study of these properties.

Other Word Forms

  • geomagnetic adjective

Etymology

Origin of geomagnetism

First recorded in 1935–40; geo- + magnetism

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Around 200 papers a year cite sunspot data, in fields extending beyond solar physics to geomagnetism, atmospheric science and climate science.

From Nature

Merrill, professor emeritus of earth and space sciences at the UW, offers a tour of the field of geomagnetism, explaining both its history and science's current understanding of the Earth's geomagnetic field.

From Seattle Times

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.