ˈnīˌsēn, ̷ ̷ˈ ̷ ̷ adjective
Usage: usually capitalized
Etymology: Middle English, from Late Latin Nicenus, Nicaenus, from Latin Nicea, Nicaea Nicaea, from Greek Nikaia
1. : of or relating to Nicaea or Nice, an ancient city of Asia Minor
2. : of or relating to a confession of Christian faith formulated and decreed by the First Council of Nicaea in A.D. 325 in opposition to Arianism and reaffirmed by the First Council of Constantinople in A.D. 381 or to one of the later forms of this confession