Nicene a. : Of or pertaining to Nice, a town of Asia Minor, or to the ecumenial council held there A. D. 325.

Example:
When did Catholics start bowing during the Nicene Creed?

Taxonomy
Creed, the Nicene Creed, Nicene Creed, the Father, Greek, God, heaven, the Apostles' Creed, profession of faith, Council, Latin, the Holy Spirit, the Roman, Constantinople, substance, liturgy, Filioque, English.

Defination from the web:
... It is called Nicene (pronounced /ˈnaɪsiːn/) because, in its original form, it was adopted in the city of ...