Where does “ὑγιεινή (τέχνη)” come from?

ὑγιεινή (τέχνη) (Ancient Greek) comes from Ancient Greek ὑγιεινός, from Ancient Greek -εινός, from Proto-Hellenic -ehnos, from Proto-Indo-European -es-.

Ancestry of “ὑγιεινή (τέχνη)”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ὑγιεινός	of health, good for the health, wholesome, sound,...
2	Ancient Greek	-εινός	Usually added to neuter nouns in -ος to form an...
3	Proto-Hellenic	-ehnos	—
4	Proto-Indo-European	-es-	—

Every word from Proto-Indo-European -es- →Every word from Ancient Greek -εινός →Every word from Ancient Greek ὑγιεινός →