diapason

The story

1. Ancient Greek · derived fromδιαπασῶν
2. Latin · borrowed fromdiapason
3. English todaydiapason

Borrowed from Latin diapason, from Ancient Greek διαπασῶν (diapasôn), that is διά (diá, “through”) + πασῶν (pasôn, “all”) (χορδῶν (khordôn, “notes”)), “through all (notes)”.