The story
- Proto-Indo-European*ten-
- Proto-Indo-European*tónos
- Proto-Hellenic*tónos
- Ancient Greekτόνος (tónos)
- Englishtono-
- Proto-Indo-European*ǵenh₁-
- Proto-Indo-European*ǵénh₁tis
- Proto-Hellenic*génetis
- Ancient Greekγένεσῐς (génesĭs)
- English todaytonogenesis
From tono- + -genesis; coined by American linguist James Matisoff in 1970 in his paper Glottal dissimilation and the Lahu high-rising tone: A tonogenetic case-study.
Etymology from Wiktionary, CC BY-SA 4.0.