It comes from the Latin words "uni", which means "one"; and "sonus", which means "sound". Combined, it creates the phrase "unisonus", or "one sound", and that later became the word we now know as "unison".
The word "unison" is a noun.
together
The root word for unison is "uni," which comes from the Latin word meaning "one."
The birds flew in unison.
The parents said no in unison to the toddler's request for a sheep.
The two women sang in unison upon the stage.
Whakakotahitanga
unison
in unison
unison
"Unison" can be either a noun (much more often) or an adjective. Example as an adjective: The fourth part of the oratorio is a unison anthem. Examples as a noun: The fourth part of the oratorio is sung in unison; how pleasant it is for a family to dwell in unison!
3; un-i-son