Etymology

magnetohydrodynamics

Today it means: the study of the interaction of electrically conducting fluids with magnetic fields; as in the Earth's core Full definition →

English hydrodynamics ← French dynamique ← Ancient Greek δυναμικός (dunamikós)
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The story

  1. Ancient GreekΜάγνης (Mágnēs)
  2. Ancient Greekμᾰ́γνης (mắgnēs)
  3. Old Frenchmagnete
  4. Ancient Greekμᾰ́γνης (mắgnēs)
  5. Latinmagnēs
  6. Middle Englishmagnete
  7. Englishmagnet
  8. Englishmagnet-
  9. Englishmagneto-
  10. Proto-Indo-European*wed-
  11. Proto-Indo-European*wódr̥
  12. Proto-Hellenic*údōr
  13. Ancient Greekῡ̆̔́δωρ (hū̆́dōr)
  14. Ancient Greekῠ̔δρο- (hŭdro-)
  15. Englishhydro-
  16. Proto-Indo-European*dewh₂-
  17. Proto-Hellenic*dunamai
  18. Ancient Greekδῠ́νᾰμαι (dŭ́nămai)
  19. Ancient Greekδύναμις (dúnamis)
  20. Ancient Greekδυναμικός (dunamikós)
  21. Frenchdynamique
  22. Englishdynamic
  23. Englishdynamics
  24. Englishhydrodynamics
  25. English todaymagnetohydrodynamics

From magneto- + hydrodynamics.

Etymology from Wiktionary, CC BY-SA 4.0.