Etymology

bifunctional

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Today it means: Having two functions. Full definition →

English functional ← Proto-Indo-European *h₂élisder.? ← Middle French function
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The story

  1. Proto-Indo-European*dwóh₁
  2. Proto-Indo-European*dwi-
  3. Proto-Italic*dwi-
  4. Latinbi-
  5. Englishbi-
  6. Proto-Indo-European*bʰewg-
  7. Proto-Indo-European*bʰunégti
  8. Proto-Italic*fungōr
  9. Latinfungor
  10. Latinfūnctiō
  11. Old Frenchfonction
  12. Middle Frenchfunction
  13. Englishfunction
  14. Proto-Indo-European*h₂el-
  15. Proto-Indo-European*h₂élisder.?
  16. Englishfunctional
  17. English todaybifunctional

From bi- + functional.

Etymology from Wiktionary, CC BY-SA 4.0.