WordReference Random House Unabridged Dictionary of American English © 2025
magnet′ic storm′, 
  1. Meteorologya temporary disturbance of the earth's magnetic field, induced by radiation and streams of charged particles from the sun. Also called geomagnetic storm. 
  • 1855–60

Collins Concise English Dictionary © HarperCollins Publishers::
magnetic storm
  1. a sudden severe disturbance of the earth's magnetic field, caused by emission of charged particles from the sun
'magnetic storm' also found in these entries (note: many are not synonyms or translations):
geomagnetic storm

Forum discussions with the word(s) "magnetic storm" in the title:


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