/ ˌjuːnɪˈteəriən; NAmE -ˈter-/ noun
a member of a Christian Church that does not believe in the Trinity and has no formal teachings
► Uni·tar·ian adjective
► Uni·tar·ian·ism / -ɪzəm; NAmE / noun [ U ]
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WORD ORIGIN
late 17th cent.: from modern Latin unitarius (from Latin unitas unity) + -an .