Etymology

biplane

B3I1P3L1A1N1E1

Today it means: Composed of, or relating to, two planes (flat surfaces extending infinitely in all directions). Full definition →

English plane ← Latin bi- ← Proto-Italic *dwi-
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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. Englishplane
  7. English todaybiplane

From bi- + plane.

Etymology from Wiktionary, CC BY-SA 4.0.