unitary

UK: /ˈjuːnɪtərɪ/ US: (yo̅o̅′ni ter′ē)

WordReference Random House Unabridged Dictionary of American English © 2025

u•ni•tar•y  (yo̅o̅′ni ter′ē), adj. 

1. of or pertaining to a unit or units.
2. of, pertaining to, characterized by, or aiming toward unity:
   the unitary principles of nationalism.
3. of the nature of a unit;
   having the indivisible character of a unit;
   whole.
4. serving as a unit, as of measurement or estimation.
5. of or pertaining to the use of units:
   A unitary method was applied.
6. Government of or pertaining to a system of government in which the executive, legislative, and judicial powers of each state in a body of states are vested in a central authority.

• unit, unit(y) + -ary 1810–20

u′ni•tar′i•ness, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

unitary / ˈjuːnɪtərɪ -trɪ/ adjective

1. of a unit or units
2. based on or characterized by unity
3. individual; whole
4. of or relating to a system of government in which all governing authority is held by the central government
   Compare federal