ユニゾンユニゾンFreq.FrequencyTop 50,000Meanings1noununisonmusic›Musical term for singing or playing the same melody at the same pitch or in octaves. Also used metaphorically for acting together in harmony.合がっ唱しょう団だんはユニゾンで歌うたい始はじめた。The choir began singing in unison.