U·ni·at 
(ynē-ăt′, -ĭt) also U·ni·ate (-ĭt, -āt′) Often Offensive
(ynē-ăt′, -ĭt) also U·ni·ate (-ĭt, -āt′) Often Offensive adj.
Of or relating to the Eastern Catholic churches.
n.
A member of an Eastern Catholic church.
[Russian uniyat, from Polish uniat, the Union of Brest (1596), which established the churches, from unija, union, from Late Latin ūniō; see UNION.]