Etymology

interface

inter·face
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Today it means: The point of interconnection or contact between entities. Full definition →

English face ← Middle English face ← Old French face
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The story

  1. Proto-Indo-European*h₁én
  2. Proto-Indo-European*h₁n̥tér
  3. Proto-Italic*n̥ter
  4. Latininter
  5. Latininter-
  6. Englishinter-
  7. Proto-Indo-European*dʰeh₁-
  8. Proto-Indo-European*dʰeh₁k-
  9. Proto-Indo-European*dʰh₁kyéti
  10. Proto-Italic*θakjō
  11. Proto-Italic*fakjō
  12. Latinfaciō
  13. Latinfaciēs
  14. Late Latinfacia
  15. Old Frenchface
  16. Middle Englishface
  17. Englishface
  18. English todayinterface

From inter- (“between”) + face (“shape, figure, form”).

Etymology from Wiktionary, CC BY-SA 4.0.