Where does “dəftərçə” come from?

dəftərçə (Azerbaijani) comes from Azerbaijani dəftər, from Arabic دَفْتَر, from Aramaic דפתרא, from Classical Syriac ܕܦܬܪܐ, from Ancient Greek διφθέρα, from Proto-Hellenic dipʰtʰérā.

Ancestry of “dəftərçə”, step by step

Step	Language	Word	Meaning
1	Azerbaijani	dəftər	notebook, exercise book
2	Arabic	دَفْتَر	register; notebook
3	Aramaic	דפתרא	—
4	Classical Syriac	ܕܦܬܪܐ	parchment, hide; account book
5	Ancient Greek	διφθέρα	prepared hide, piece of leather; especially as...
6	Proto-Hellenic	dipʰtʰérā	—

Every word from Proto-Hellenic dipʰtʰérā →Every word from Ancient Greek διφθέρα →Every word from Classical Syriac ܕܦܬܪܐ →