Etymology

tetrasulfur

T1E1T1R1A1S1U1L1F4U1R1

Today it means: The allotrope of sulfur, S₄ having four atoms in a ring Full definition →

English sulfur ← Middle English sulphur ← Anglo-Norman sulfre
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The story

  1. Proto-Indo-European*kʷetwóres
  2. Proto-Hellenic*kʷétwores
  3. Ancient Greekτέσσᾰρες (téssăres)
  4. Ancient Greekτετρᾰ- (tetră-)
  5. Englishtetra-
  6. Latinsulpur
  7. Latinsulfur
  8. Latinsulphur
  9. Anglo-Normansulfre
  10. Middle Englishsulphur
  11. Englishsulfur
  12. English todaytetrasulfur

From tetra- + sulfur.

Etymology from Wiktionary, CC BY-SA 4.0.