Etymology

geomagnetism

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Today it means: The magnetism of the Earth. Full definition →

English magnetism ← Ancient Greek γεω- (geō-) ← Proto-Hellenic *gaya
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The story

  1. Proto-Hellenic*gaya
  2. Ancient Greekγαῖᾰ (gaîă)clip.
  3. Ancient Greekγῆ (gê)
  4. Ancient Greekγεω- (geō-)
  5. Englishgeo-
  6. Englishmagnetism
  7. English todaygeomagnetism

From geo- + magnetism.

Etymology from Wiktionary, CC BY-SA 4.0.