Etymology

helioseismological

Today it means: Of or pertaining to helioseismology. Full definition →

English seismological ← Proto-Indo-European *h₂élisder.? ← Ancient Greek ἥλῐος (hḗlĭos)
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The story

  1. Proto-Indo-European*sóh₂wl̥
  2. Proto-Indo-European*sh₂wél(i)yos
  3. Proto-Hellenic*hāwélios
  4. Ancient Greekἥλῐος (hḗlĭos)
  5. Englishhelio-
  6. Englishseismology
  7. Proto-Indo-European*h₂el-
  8. Proto-Indo-European*h₂élisder.?
  9. Englishseismological
  10. English todayhelioseismological

From helio- + seismological.

Etymology from Wiktionary, CC BY-SA 4.0.