Where does “Itä-Aasia” come from?

Itä-Aasia (Finnish) comes from Finnish Aasia, from Latin Āsia, from Ancient Greek Ἀσία, from Mycenaean Greek 𐀀𐀯𐀹𐀊, from Hittite 𒀸𒋗𒉿 — northwest Anatolia.

Ancestry of “Itä-Aasia”, step by step

Itä-Aasia traces back through two separate lines of ancestry.

via Finnish Aasia

Step	Language	Word	Meaning
1	Finnish	Aasia	of Asia; Asia; Asian
2	Latin	Āsia	A kind of rye
3	Ancient Greek	Ἀσία	Asia Minor; Asia; Asia
4	Mycenaean Greek	𐀀𐀯𐀹𐀊	an ethnonym for a Lydian; an epithet of the...
5	Hittite	𒀸𒋗𒉿	northwest Anatolia

via Finnish itä

Step	Language	Word	Meaning
1	Finnish	itä	east; east, eastern; East, the Orient
2	Proto-Finnic	itä	east
3	Proto-Uralic	itä-	to appear

Every word from Hittite 𒀸𒋗𒉿 →Every word from Mycenaean Greek 𐀀𐀯𐀹𐀊 →Every word from Ancient Greek Ἀσία →