Where does “ketjureaktio” come from?
ketjureaktio (Finnish) comes from Finnish reaktio, from Latin reactio, from Latin reago, from Latin rĕ-, from Latin prōdūcō, from Latin prō-, from Proto-Italic *pro-, from Proto-Indo-European pro- — passed , crossed.
ketjureaktio (Finnish): chain reaction
Ancestry of “ketjureaktio”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Finnish | reaktio | A reaction |
| 2 | Latin | reactio | reaction |
| 3 | Latin | reago | I act upon again, I do again; I react |
| 4 | Latin | rĕ- | — |
| 5 | Latin | prōdūcō | — |
| 6 | Latin | prō- | — |
| 7 | Proto-Italic | *pro- | — |
| 8 | Proto-Indo-European | pro- | toward, forward |
| 9 | Proto-Indo-European | por- | to give birth; forward, through; going, passage |
| 10 | Proto-Indo-European | per- | before, in front; first; to go through |
| 11 | Proto-Indo-European | pr̥tós | passed , crossed |