Etymology

megaseism

M3E1G2A1S1E1I1S1M3

Today it means: A large or severe earthquake. Full definition →

English seism ← Ancient Greek μέγᾰς (mégăs) ← Proto-Hellenic *mégas
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The story

  1. Proto-Indo-European*méǵh₂s
  2. Proto-Hellenic*mégas
  3. Ancient Greekμέγᾰς (mégăs)
  4. Englishmega-
  5. Englishseism
  6. English todaymegaseism

From mega- + seism.

Etymology from Wiktionary, CC BY-SA 4.0.