Etymology

isoenergy

I1S1O1E1N1E1R1G2Y4

Today it means: Having constant energy. Full definition →

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

  1. Ancient Greekῐ̓́σος (ĭ́sos)
  2. Englishiso-
  3. Late Latinenergīa
  4. Middle Frenchénergie
  5. Englishenergy
  6. English todayisoenergy

From iso- + energy.

Etymology from Wiktionary, CC BY-SA 4.0.