Etymology

transactinide

T1R1A1N1S1A1C3T1I1N1I1D2E1

Today it means: Lying beyond lawrencium (the last actinide) in the periodic table; having an atomic number greater than 103. Full definition →

English actinide ← Proto-Indo-European *dʰeh₁- ← Ancient Greek ᾰ̓κτῑ́ς (ăktī́s)
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The story

  1. Proto-Indo-European*terh₂-
  2. Proto-Indo-European*térh₂t
  3. Proto-Indo-European*tr̥h₂ónts
  4. Proto-Indo-European*tr̥h₂n̥ts
  5. Proto-Italic*trāns
  6. Proto-Italic*trāns-
  7. Latintrans-
  8. Englishtrans-
  9. Ancient Greekᾰ̓κτῑ́ς (ăktī́s)
  10. Englishactino-
  11. Englishactin-
  12. Proto-Indo-European*dʰeh₁-
  13. Englishactinide
  14. English todaytransactinide

From trans- + actinide.

Etymology from Wiktionary, CC BY-SA 4.0.