Etymology

bilinear

B3I1L1I1N1E1A1R1

Today it means: Linear (preserving linear combinations) in each variable. Full definition →

English linear ← Latin līneāris ← 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*līnom
  7. Proto-Italic*līnom
  8. Latinlīnum
  9. Latinlīneus
  10. Latinlīnea
  11. Proto-Indo-European*h₂el-
  12. Proto-Indo-European*h₂élisder.?
  13. Latinlīneāris
  14. Englishlinear
  15. English todaybilinear

From bi- + linear.

Etymology from Wiktionary, CC BY-SA 4.0.