D defs.my
Entry 1 sense Webster, 1913

Unicity

· U·nic·i·ty · IPA
01 n. The condition of being united; quality of the unique; unification.
  1. 1.
    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.