The story
- Proto-Indo-European*pleh₁-
- Proto-Indo-European*polh₁ús
- Ancient Greekπολῠ́ς (polŭ́s)
- Englishpoly-
- Proto-Indo-European*péh₂wr̥
- Proto-Hellenic*pāwər
- Ancient Greekπῦρ (pûr)
- Ancient Greekπῠρρός (pŭrrhós)
- GermanPyrro
- Englishpyrrole
- Englishpyrrolidine
- GermanKeton
- Englishketone
- Englishpyrrolidone
- English todaypolypyrrolidone
From poly- + pyrrolidone.
Etymology from Wiktionary, CC BY-SA 4.0.