Uniat[yo͞oˈnē-ătˌ, -ĭt] also U·ni·ate [-ĭt, -ātˌ]
Uniat definition by American Heritage Dictionary
Origin: Russian uniyat, from Polish uniat, the Union of Brest-Litovsk (1596), from unija, union, from Late Latin ūniō; see union.
Variant of Uniate
Origin: Russian uniyat ; from uniya, the union establishing this church ; from Vulgar Latin unio, union