Etymology

proteobacterial

P3R1O1T1E1O1B3A1C3T1E1R1I1A1L1

Today it means: Of or pertaining to the Proteobacteria. Full definition →

Proto-Indo-European *h₂élisder.? ← taxonomic name Proteobacteria ← Ancient Greek βακτήριον (baktḗrion)
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The story

  1. Ancient GreekΠρωτεύς (Prōteús)
  2. New LatinPrōteus
  3. Ancient Greekβακτηρία (baktēría)
  4. Ancient Greekβακτήριον (baktḗrion)
  5. taxonomic nameProteobacteria
  6. Proto-Indo-European*h₂el-
  7. Proto-Indo-European*h₂élisder.?
  8. English todayproteobacterial

From taxonomic name Proteobacteria + English -al.

Etymology from Wiktionary, CC BY-SA 4.0.