Etymology

isotopomer

I1S1O1T1O1P3O1M3E1R1

Today it means: An isomer of a chemical compound differing only in the position of an isotope Full definition →

English topomer ← Ancient Greek ῐ̓́σος (ĭ́sos)
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The story

  1. Ancient Greekῐ̓́σος (ĭ́sos)
  2. Englishiso-
  3. Englishtopomer
  4. English todayisotopomer

From iso- + topomer.

Etymology from Wiktionary, CC BY-SA 4.0.