[ yoo-nee-it, -eyt ]
/ ˈyu ni ɪt, -ˌeɪt /


a member of an Eastern church that is in union with the Roman Catholic Church, acknowledges the Roman pope as supreme in matters of faith, but maintains its own liturgy, discipline, and rite.
Also U·ni·at [yoo-nee-at] /ˈyu niˌæt/.

Origin of Uniate

1825–35; < Ukrainian uni(y)át, equivalent to úni(ya) the Union of Brest-Litovsk (1596), an acceptance of papal supremacy by some Orthodox clerics in Poland (< Polish uni(j)a < Latin ūniō union) + -(y)atLatin -ātus -ate1

Related forms

U·ni·at·ism, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for uniat


Uniate (ˈjuːnɪɪt, -ˌeɪt)

/ (ˈjuːnɪˌæt) /


designating any of the Eastern Churches that retain their own liturgy but submit to papal authority


a member of one of these Churches

Derived Forms

Uniatism, noun

Word Origin for Uniat

C19: from Russian uniyat, from Polish unja union, from Late Latin ūniō; see union
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012