Etymology

bifacial

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Today it means: Having two faces or opposing surfaces. Full definition →

English facial ← Medieval Latin faciālis ← Proto-Indo-European *h₂élisder.?
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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*dʰeh₁-
  7. Proto-Indo-European*dʰeh₁k-
  8. Proto-Indo-European*dʰh₁kyéti
  9. Proto-Italic*θakjō
  10. Proto-Italic*fakjō
  11. Latinfaciō
  12. Latinfaciēs
  13. Proto-Indo-European*h₂el-
  14. Proto-Indo-European*h₂élisder.?
  15. Medieval Latinfaciālis
  16. Englishfacial
  17. English todaybifacial

From bi- + facial.

Etymology from Wiktionary, CC BY-SA 4.0.