Unitarian

U`ni*ta"ri*an (?), n. [Cf. F. unitaire, unitairien, NL. unitarius. See Unity.] 1. (Theol.) 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.

2. One who rejects the principle of dualism.

3. A monotheist. [R.] Fleming.

U`ni*ta"ri*an (?), a. Of or pertaining to Unitarians, or their doctrines.