Where does “unison” come from?

Unison comes from Middle English unisoun, from Middle French unisson, from Medieval Latin unisonus, combining Latin unus meaning "one" with Latin sonus meaning "sound."

unison (English): Identical pitch between two notes or sounds; the...

Definitions

  1. Identical pitch between two notes or sounds; the...

Ancestry of “unison”, step by step

StepLanguageWordMeaning
1Middle Englishunisoun—
2Middle Frenchunisson—
3Medieval Latinunisonushaving the same sound
4Latinūni-one; uni
5Latinūnusone, single
6Old Latinoinosone
7Proto-Italicoinoscardinal number 1 Previous: n/a Next: *duō;...
8Proto-Indo-Europeanóynosone; single

Words derived from “unison”

Every word from Proto-Indo-European óynos →Every word from Proto-Italic oinos →Every word from Old Latin oinos →
unison — Etymology, Origin & Word History | Etymology Explorer