society > leisure > the arts > music > musical sound > harmony or sounds in combination > [noun] > unison (6)
Music and Acoustics. An accompanying melody played or sung at the same pitch as the voice or instrument accompanied, or one or more octaves apart…
Identity of pitch or sound; unison. Hence (in extended use): uniformity.
Music. Homophonic music or style. Unison, or music performed in unison: opposed to antiphony.
Music. = homophony, n. 1. rare.