Etymology

carbonigenous

C3A1R1B3O1N1I1G2E1N1O1U1S1

Today it means: Carboniferous. Full definition →

English carbon ← French carbone ← Latin carbōnem
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The story

  1. Proto-Indo-European*kerh₃-der.?
  2. Latincarbōnem
  3. Frenchcarbone
  4. Englishcarbon
  5. English todaycarbonigenous

From carbon + -i- + -genous.

Etymology from Wiktionary, CC BY-SA 4.0.