Where does “ทศวรรษ” come from?
ทศวรรษ (Thai) comes from Thai ทศ, from Sanskrit दश, from Sanskrit देश, from Proto-Indo-Aryan dayśás, from Proto-Indo-Iranian dayćás, from Proto-Indo-European deyḱ- — to point out.
ทศวรรษ (Thai): a decade
Ancestry of “ทศวรรษ”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Thai | ทศ | — |
| 2 | Sanskrit | दश | ten |
| 3 | Sanskrit | देश | point, region, spot, place, part, portion;... |
| 4 | Proto-Indo-Aryan | dayśás | point, region, part; country, province |
| 5 | Proto-Indo-Iranian | dayćás | part, point; country |
| 6 | Proto-Indo-European | deyḱ- | to point out |