Where does “সপ্তদশ” come from?

সপ্তদশ (Bengali) comes from Sanskrit सप्तदश, from Sanskrit दश, from Sanskrit देश, from Proto-Indo-Aryan dayśás, from Proto-Indo-Iranian dayćás, from Proto-Indo-European deyḱ- — to point out.

সপ্তদশ (Bengali): seventeenth

Definitions

seventeenth

Ancestry of “সপ্তদশ”, step by step

Step	Language	Word	Meaning
1	Sanskrit	सप्तदश	seventeen
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

Every word from Proto-Indo-European deyḱ- →Every word from Proto-Indo-Iranian dayćás →Every word from Proto-Indo-Aryan dayśás →