Where does “Colossee” come from?

Colossee (Middle French) comes from Latin Colosseum, from Latin colosseus, from Ancient Greek κολοσσιαῖος, from Ancient Greek -αῖος, from Ancient Greek -ῐος, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

Ancestry of “Colossee”, step by step

Step	Language	Word	Meaning
1	Latin	Colosseum	—
2	Latin	colosseus	colossal, huge, gigantic
3	Ancient Greek	κολοσσιαῖος	colossal
4	Ancient Greek	-αῖος	Suffix added to nouns or adjectives, forming adjectives: pertaining to, belonging to ("of")
5	Ancient Greek	-ῐος	belonging to; of”, “belonging to”, “pertaining to
6	Proto-Indo-European	-yós	Creates adjectives from noun or verb stems

Every word from Proto-Indo-European -yós →Every word from Ancient Greek -ῐος →Every word from Ancient Greek -αῖος →