Where does “տրամաբանություն” come from?

տրամաբանություն (Armenian) comes from Old Armenian տրամաբանութիւն, from Old Armenian տրամաբան, 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.

տրամաբանություն (Armenian): logic

Definitions

logic

Ancestry of “տրամաբանություն”, step by step

Step	Language	Word	Meaning
1	Old Armenian	տրամաբանութիւն	logic; dialogue
2	Old Armenian	տրամաբան	logician; dialogue
3	Ancient Greek	διάλογος	conversation, dialogue
4	Ancient Greek	διαλέγω	to choose, gather, pick (out), select
5	Ancient Greek	δῐᾰ-	apart; through, across; through; in different...
6	Ancient Greek	διά	throughout
7	Proto-Indo-European	dwís	twice, doubly; in two
8	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 →