Etymology

euphotic

E1U1P3H4O1T1I1C3

Today it means: Synonym of photic (“describing that part of the near-surface ocean in which photosynthesis is possible”). Full definition →

English photic ← Ancient Greek εὖ (eû) ← Proto-Hellenic *ehu-
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The story

  1. Proto-Indo-European*h₁wes-
  2. Proto-Indo-European*h₁wésus?
  3. Proto-Indo-European*h₁es-?
  4. Proto-Indo-European*h₁su-
  5. Proto-Hellenic*ehu-
  6. Ancient Greekἐΰς (eǘs)
  7. Ancient Greekεὖ (eû)
  8. Englisheu-
  9. Englishphotic
  10. English todayeuphotic

From eu- + photic.

Etymology from Wiktionary, CC BY-SA 4.0.