unison.
Identical pitch between two notes or sounds; the simultaneous playing of notes of identical pitch (or separated by one or more octaves).
Meaning & usage
Identical pitch between two notes or sounds; the simultaneous playing of notes of identical pitch (or separated by one or more octaves).
The unison has a pitch ratio of 1:1.
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.
Everyone moved in unison, but the sudden change in weight distribution capsized the boat.
Two or more voices speaking or singing the same words together.
Where this word comes from
From Middle English unisoun, from Middle French unisson, from Medieval Latin ūnisonus (“having the same sound”), from ūni- + sonus (“sound”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.