Etymology

helioseismology

H4E1L1I1O1S1E1I1S1M3O1L1O1G2Y4

Today it means: The study of the propagation of pressure waves in the Sun. Full definition →

English seismology ← Ancient Greek ἥλῐος (hḗlĭos) ← Proto-Hellenic *hāwélios
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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. English todayhelioseismology

From helio- + seismology.

Etymology from Wiktionary, CC BY-SA 4.0.