unison

Pronunciation: /ˈjunɪsən/

The English word “unison” has 4 meanings listed here.

noun

Identical pitch between two notes or sounds; the simultaneous playing of notes of identical pitch (or separated by one or more octaves).
A sound or note having the same pitch as another, especially when used as the base note for an interval; a unison string.
The state of being in harmony or agreement; harmonious agreement or togetherness, synchronisation.
Two or more voices speaking or singing the same words together.

From Middle English unisoun, from Middle French unisson, from Medieval Latin ūnisonus (“having the same sound”), from ūni- + sonus (“sound”).

Keep exploring: in the interactive dictionary every word of a definition is a link. Open “unison” there

The English dictionary on Glottosphere has 650,529 entries with a page. Browse the English dictionary.

Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.