Where does “díptic” come from?

díptic (Catalan) comes from Latin diptycha, from Ancient Greek δίπτυχος, from Ancient Greek δί-, from Ancient Greek διά, from Proto-Indo-European dwís, from Proto-Indo-European dwóh₁ — two.

díptic (Catalan): diptych

Definitions

diptych

Ancestry of “díptic”, step by step

Step	Language	Word	Meaning
1	Latin	diptycha	—
2	Ancient Greek	δίπτυχος	folded, doubled
3	Ancient Greek	δί-	Twice, double
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 Proto-Indo-European dwís →Every word from Ancient Greek διά →