Etymology

isotonic

I1S1O1T1O1N1I1C3

Today it means: Having the same osmotic pressure. Full definition →

English tonic ← Ancient Greek τονῐκός (tonĭkós) ← Proto-Hellenic *tónos
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The story

  1. Ancient Greekῐ̓́σος (ĭ́sos)
  2. Englishiso-
  3. Proto-Indo-European*ten-
  4. Proto-Indo-European*tónos
  5. Proto-Hellenic*tónos
  6. Ancient Greekτόνος (tónos)
  7. Ancient Greekτονῐκός (tonĭkós)
  8. Englishtonic
  9. English todayisotonic

From iso- + tonic.

Etymology from Wiktionary, CC BY-SA 4.0.