The story
- Proto-Indo-European*dwóh₁
- Proto-Indo-European*dwi-
- Proto-Hellenic*dwi-
- Ancient Greekδῐ- (dĭ-)
- Latindi-
- Englishdi-
- Ancient Greekῐ̓́σος (ĭ́sos)
- Englishiso-
- Englishquinine
- Englishquinoline
- Englishisoquinoline
- English todaydiisoquinoline
From di- + isoquinoline.
Etymology from Wiktionary, CC BY-SA 4.0.