Where does “διάλογος” come from?

διάλογος (Greek) comes from Ancient Greek διάλογος, from Ancient Greek διαλέγω, from Ancient Greek δῐᾰ-, from Ancient Greek διά, from Proto-Indo-European dwís, from Proto-Indo-European dwóh₁ — two.

διάλογος (Greek): dialogue

Definitions

dialogue

Ancestry of “διάλογος”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	διάλογος	conversation, dialogue
2	Ancient Greek	διαλέγω	to choose, gather, pick (out), select
3	Ancient Greek	δῐᾰ-	apart; through, across; through; in different...
4	Ancient Greek	διά	throughout
5	Proto-Indo-European	dwís	twice, doubly; in two
6	Proto-Indo-European	dwóh₁	two

Every word from Proto-Indo-European dwóh₁ →Every word from Ancient Greek δῐᾰ- →Every word from Proto-Indo-European dwís →