'Uniate' definitions:

Definition of 'Uniate'

From: WordNet
adjective
Of or relating to former Eastern Christian or Orthodox churches that have been received under the jurisdiction of the Church of Rome but retain their own rituals and practices and canon law
noun
A member of the Uniat Church [syn: Uniat, Uniate, Uniate Christian]

Definition of 'Uniate'

From: GCIDE
  • Uniat \U"ni*at\, Uniate \U"ni*ate\, n. (Eccl.) A member of the Greek Church, who nevertheless acknowledges the supremacy of the Pope of Rome; one of the United Greeks. Also used adjectively. [1913 Webster]