The story
- Ancient Greekχρόνος (khrónos)
- Englishchrono-
- Proto-Indo-European*gʷeyh₃-
- Ancient Greekβίος (bíos)
- Proto-Indo-European*leǵ-
- Proto-Indo-European*lóǵos
- Proto-Hellenic*lógos
- Ancient Greekλόγος (lógos)
- New Latinbiologia
- Englishbiology
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Englishbiological
- English todaychronobiological
From chrono- + biological.
Etymology from Wiktionary, CC BY-SA 4.0.