Where does “diapasón” come from?

diapasón (Spanish) comes from Latin diapason, from Ancient Greek διαπασῶν, from Ancient Greek διά, from Proto-Indo-European dwís, from Proto-Indo-European dwóh₁ — two.

diapasón (Spanish): diapason; tuning fork; fingerboard

Definitions

diapason; tuning fork; fingerboard

Ancestry of “diapasón”, step by step

Step	Language	Word	Meaning
1	Latin	diapason	—
2	Ancient Greek	διαπασῶν	octave
3	Ancient Greek	διά	throughout
4	Proto-Indo-European	dwís	twice, doubly; in two
5	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 →