Where does “διετής” come from?

διετής (Greek) comes from Ancient Greek διετής, from Ancient Greek δί-, from Ancient Greek διά, from Proto-Indo-European dwís, from Proto-Indo-European dwóh₁ — two.

διετής (Greek): of or lasting two years

Definitions

of or lasting two years

Ancestry of “διετής”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	διετής	of or lasting two years
2	Ancient Greek	δί-	Twice, double
3	Ancient Greek	διά	throughout
4	Proto-Indo-European	dwís	twice, doubly; in two
5	Proto-Indo-European	dwóh₁	two

Every word from Proto-Indo-European dwóh₁ →Every word from Proto-Indo-European dwís →Every word from Ancient Greek διά →