Etymology

biogas

B3I1O1G2A1S1

Today it means: A mixture of methane and carbon dioxide, produced by anaerobic digestion of organic waste matter, used as a fuel. Full definition →

English gas ← Dutch gas ← Ancient Greek χάος (kháos)
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The story

  1. Proto-Indo-European*gʷeyh₃-
  2. Ancient Greekβῐ́ος (bĭ́os)
  3. Ancient Greekβῐο- (bĭo-)
  4. Englishbio-
  5. Proto-Indo-European*ǵʰeh₂-
  6. Ancient Greekχαῦνος (khaûnos)
  7. Ancient Greekχάος (kháos)
  8. Dutchgas
  9. Englishgas
  10. English todaybiogas

From bio- + gas.

Etymology from Wiktionary, CC BY-SA 4.0.