1.Definition: characterized by or constituting a form of government in which power is held by one central authority
"A unitary as opposed to a federal form of government"
2.Definition: having the indivisible character of a unit
"A unitary action"
3.Definition: of or pertaining to or involving the use of units
"A unitary method was applied", "Established a unitary distance on which to base subsequent calculations"
4.Definition: relating to or characterized by or aiming toward unity
"The unitary principles of nationalism", "A unitary movement in politics"