Unitarian /(?)/

U·ni·ta·ri·an

Unitarian

n.
  1. One who denies the doctrine of the Trinity, believing that God exists only in one person; a unipersonalist; also, one of a denomination of Christians holding this belief. (Theol.)
  2. One who rejects the principle of dualism.
  3. A monotheist. [R.]

Unitarian

a.
  1. Of or pertaining to Unitarians, or their doctrines.