Bible Dictionaries
Unitarian

Webster's Dictionary

(1):

(a.) Of or pertaining to Unitarians, or their doctrines.

(2):

(n.) A monotheist.

(3):

(n.) One who rejects the principle of dualism.

(4):

(n.) 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.

Bibliography Information
Webster, Noah. Entry for 'Unitarian'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​u/unitarian.html. 1828.