Etymology

operationally

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Today it means: In an operational manner; in accordance with an operation. Full definition →

Proto-Germanic *līką ← Proto-Indo-European *leyg- ← English operational
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The story

  1. Proto-Indo-European*h₃ep-
  2. Proto-Indo-European*h₃épos
  3. Proto-Italic*opos
  4. Latinopus
  5. Latinopera
  6. Latinoperātusbf.
  7. Latinoperor
  8. Latinoperātiō
  9. Old Frenchoperacion
  10. Middle Englishoperacioun
  11. Englishoperation
  12. Proto-Indo-European*h₂el-
  13. Proto-Indo-European*h₂élisder.?
  14. Englishoperational
  15. Proto-Indo-European*leyg-
  16. Proto-Germanic*līką
  17. English todayoperationally

From operational + -ly.

Etymology from Wiktionary, CC BY-SA 4.0.