UNITARIAN
Source: 566, 567
unitarian. Unitarian, [u as yu] n. one who denies the trinity, and ascribes divinity to one supreme God only
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U′ni‐ta″ri‐an (?), n. [[Cf. F. unitaire, unitairien, NL. unitarius. See Unity.]] 1. 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. 2. One who rejects the principle of dualism.
3. 3. A monotheist. Fleming.