"pertaining to an Eastern Christian church that acknowledges the supremacy of the Pope," 1833, from Russian uniyat, from unia "unity, union," from Latin unus "one" (from PIE root *oi-no- "one, unique").
unhorse
unhuman
unh-unh
unhygienic
uni-
Uniate
unicameral
UNICEF
unicellular
unicorn
unicycle