The story
- Proto-Hellenic*kʰrṓwmə
- Ancient Greekχρῶμᾰ (khrômă)
- Englishchromo-
- Proto-Indo-European*treb-der.?
- Ancient Greekθερᾰ́πων (therắpōn)
- Ancient Greekθεραπεύω (therapeúō)
- Ancient Greekθεραπεία (therapeía)
- New Latintherapīa
- Englishtherapy
- English todaychromotherapy
Etymology from Wiktionary, CC BY-SA 4.0.