unison
//ˈjuːnɪsən//
Noun
unisonSingular
unisonsPlural
1
Simultaneous performance or utterance of action or speech, especially singing or speaking the same words at the same time.
The choir sang the national anthem in unison.
2
Agreement or harmony between people or groups.
The team worked in unison to complete the project on time.
3
In music, the interval between two notes of the same pitch, or the combination of voices or instruments at the same pitch.
The choir sang the opening phrase in unison.