Etymology

dirubidium

D2I1R1U1B3I1D2I1U1M3

Today it means: Two atoms of rubidium in a compound Full definition →

English rubidium ← New Latin rubidium ← Latin rūbidus
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The story

  1. Proto-Indo-European*dwóh₁
  2. Proto-Indo-European*dwi-
  3. Proto-Hellenic*dwi-
  4. Ancient Greekδῐ- (dĭ-)
  5. Latindi-
  6. Englishdi-
  7. Proto-Indo-European*h₁rewdʰ-
  8. Proto-Indo-European*dʰeh₁-
  9. Latinrūbidus
  10. New Latinrubidium
  11. Englishrubidium
  12. English todaydirubidium

From di- + rubidium.

Etymology from Wiktionary, CC BY-SA 4.0.