Etymology

eigenenergy

E1I1G2E1N1E1N1E1R1G2Y4

Today it means: The energy associated with an eigenfunction. Full definition →

English energy ← Middle French énergie ← Late Latin energīa
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The story

  1. Proto-Indo-European*h₂eyḱ-
  2. Proto-Indo-European*h₂eh₂óyḱe
  3. Proto-Germanic*aiganą
  4. Proto-Germanic*aiganaz
  5. Proto-West Germanic*aigan
  6. Old High Germaneigan
  7. Middle High Germaneigen
  8. Germaneigen
  9. Englisheigen-
  10. Late Latinenergīa
  11. Middle Frenchénergie
  12. Englishenergy
  13. English todayeigenenergy

From eigen- + energy.

Etymology from Wiktionary, CC BY-SA 4.0.