Where does “trilogy” come from?

trilogy (English) comes from Latin trilogia, from Ancient Greek τριλογία, from Ancient Greek τρῐ-, from Ancient Greek τρεῖς, from Proto-Hellenic tréyes, from Proto-Indo-European *tréyes.

trilogy (English): A set of three works of art that are connected,...

Definitions

A set of three works of art that are connected,...

Ancestry of “trilogy”, step by step

Step	Language	Word	Meaning
1	Latin	trilogia	—
2	Ancient Greek	τριλογία	trilogy, group of three tragedies performed...
3	Ancient Greek	τρῐ-	three; {{l\|en\|tri-}}
4	Ancient Greek	τρεῖς	three
5	Proto-Hellenic	tréyes	three
6	Proto-Indo-European	*tréyes	—

Words derived from “trilogy”

treelogy
thrillogy
trilogist

Every word from Proto-Indo-European *tréyes →