First Known Use: 15th century
Dictionary
unison
noun uni·son \ˈyü-nə-sən, -nə-zən\
Definition of UNISON
1
a : identity in musical pitch; specifically : the interval of a perfect prime b : the state of being so tuned or sounded c : the writing, playing, or singing of parts in a musical passage at the same pitch or in octaves
2
: a harmonious agreement or union : concord
— unison adjective
— in unison
1
: in perfect agreement : so as to harmonize exactly <a class reciting in unison>
2
: at the same time : simultaneously
See unison defined for English-language learners
See unison defined for kids
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Origin of UNISON
Middle English unisoun, from Middle French unisson, from Medieval Latin unisonus having the same sound, from Latin uni- + sonus sound — more at sound
Related to UNISON
- Synonyms
- accord, concurrence, concurrency, consensus, unanimity, agreement
- Antonyms
- conflict, disagreement, dissensus
IN UNISON Defined for Kids
unison
noun uni·son \ˈyü-nə-sən\
Definition of UNISON for Kids
: the state of being tuned or sounded at the same pitch or at an octave
— in unison
1
: in exact agreement <They are in unison as to what to do next.>
2
: at the same time <… they all stuck their tongues out in unison … — Louise Fitzhugh, Harriet the Spy>
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