unison

Meanings

1. 1
   noun

   (music) two or more sounds or tones at the same pitch or in octaves

   singing in unison

2. 2
   noun

   occurring together or simultaneously

   the two spoke in unison

3. 3
   noun

   corresponding exactly

   marching in unison

4. 4
   noun

   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.

5. 5
   noun

   A sound or note having the same pitch as another, especially when used as the base note for an interval; a unison string.

   I could not behold him without emotion; when he accosted me, his well-known voice made my heart vibrate, like a musical chord, when its unison is struck.

6. 6
   noun

   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.

7. 7
   name

   A public-sector trade union in the United Kingdom.

8. 8
   noun

   Two or more voices speaking or singing the same words together.

Etymology

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