Etymology

isorefractive

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Today it means: Having the same refractive index Full definition →

English refractive ← Ancient Greek ῐ̓́σος (ĭ́sos)
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The story

  1. Ancient Greekῐ̓́σος (ĭ́sos)
  2. Englishiso-
  3. Englishrefractive
  4. English todayisorefractive

From iso- + refractive.

Etymology from Wiktionary, CC BY-SA 4.0.