單一性
Unicity \U*nic"i*ty\, n. [L. unicus single. See {Unique}.]
The condition of being united; quality of the unique;
unification.
Not unity, but what the schoolmen call unicity. --De
Quincey.
The unicity we strive not to express, for that is
impossible, but to designate by the nearest analogy.
--Coleridge.