Where does “Constantinopolis” come from?

Constantinopolis (Latin) comes from Koine Greek Κωνστᾰντῑνούπολῐς, from Ancient Greek Κωνστᾰντῖνος, from Latin Constantinus, from Latin -īnus, from Proto-Italic -īnos, from Proto-Indo-European -iHnos, from Proto-Indo-European -no- — adjectival suffix.

Ancestry of “Constantinopolis”, step by step

Constantinopolis traces back through 3 separate lines of ancestry.

via Koine Greek Κωνστᾰντῑνούπολῐς

Step	Language	Word	Meaning
1	Koine Greek	Κωνστᾰντῑνούπολῐς	Constantinople
2	Ancient Greek	Κωνστᾰντῖνος	of Constantine; Constantine's
3	Latin	Constantinus	—
4	Latin	-īnus	of or pertaining to; -ine
5	Proto-Italic	-īnos	of/belonging to
6	Proto-Indo-European	-iHnos	Creates adjectives of materials
7	Proto-Indo-European	-no-	adjectival suffix

via Ancient Greek Κωνσταντινούπολις

Step	Language	Word	Meaning
1	Ancient Greek	Κωνσταντινούπολις	Constantine’s city
2	Ancient Greek	πόλις	city; a whole country, as dependent on and called...
3	Proto-Hellenic	ptólis	city
4	Proto-Indo-European	tpólHis	—
5	Proto-Indo-European	tpelH-	fortification, city

via Byzantine Greek Κωνστᾰντῑνούπολῐς

Step	Language	Word	Meaning
1	Byzantine Greek	Κωνστᾰντῑνούπολῐς	—

Words derived from “Constantinopolis”

Every word from Proto-Indo-European -no- →Every word from Latin -īnus →Every word from Proto-Italic -īnos →