The story
- Proto-Indo-European*h₁én
- Proto-Indo-European*h₁énteros
- Latin*interus
- Latinintrā
- Englishintra-
- Latinmōlēs
- New Latinmōlēcula
- Frenchmolécule
- Englishmolecule
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Englishmolecular
- English todayintramolecular
Etymology from Wiktionary, CC BY-SA 4.0.