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Webster 1913 Edition
Unitarian
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.
Uˊni-ta′ri-an
,Adj.
Of or pertaining to Unitarians, or their doctrines.
Webster 1828 Edition
Unitarian
UNITA'RIAN
,Noun.
UNITA'RIAN
,Adj.