Where does “suuhygienia” come from?

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

suuhygienia (Finnish): oral hygiene

Definitions

oral hygiene

Ancestry of “suuhygienia”, step by step

suuhygienia traces back through two separate lines of ancestry.

via Finnish hygienia

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

via Finnish suu

Step	Language	Word	Meaning
1	Finnish	suu	mouth
2	Proto-Finnic	süü	thread, fibre; annual ring; reason, cause
3	Proto-Uralic	śuwe	mouth

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