Etymology

parahydrogen

par·a·hy·dro·gen
P3A1R1A1H4Y4D2R1O1G2E1N1

Today it means: The form of the hydrogen molecule (H₂) in which the two nuclei have antiparallel spin; about 25% of hydrogen at room temperature. Full definition →

English hydrogen ← French hydrogène ← Ancient Greek γένος (génos)
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The story

  1. Proto-Indo-European*per-
  2. Proto-Indo-European*preh₂-
  3. Proto-Hellenic*pərai
  4. Ancient Greekπᾰρᾰ́ (părắ)
  5. Ancient Greekπᾰρᾰ- (pără-)
  6. Englishpara-
  7. Proto-Indo-European*wed-
  8. Proto-Indo-European*wódr̥
  9. Proto-Hellenic*údōr
  10. Ancient Greekῡ̆̔́δωρ (hū̆́dōr)
  11. Ancient Greekὑδρο- (hudro-)
  12. Frenchhydro-
  13. Proto-Indo-European*ǵenh₁-
  14. Proto-Indo-European*ǵénh₁os
  15. Proto-Hellenic*génos
  16. Ancient Greekγένος (génos)
  17. Frenchhydrogène
  18. Englishhydrogen
  19. English todayparahydrogen

From para- + hydrogen.

Etymology from Wiktionary, CC BY-SA 4.0.