Etymology

tetrahalide

T1E1T1R1A1H4A1L1I1D2E1

Today it means: Any halide having four halogen atoms Full definition →

English halide ← Ancient Greek τετρᾰ- (tetră-) ← Proto-Hellenic *kʷétwores
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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. Englishhalide
  7. English todaytetrahalide

From tetra- + halide.

Etymology from Wiktionary, CC BY-SA 4.0.