- See under Nicene Creed(def 2).
- a formal statement of the chief tenets of Christian belief, adopted by the first Nicene Council.
- a later creed of closely similar form (Niceno-Constantinopolitan Creed or Constantinopolitan Creed) referred, perhaps erroneously, to the Council of Constantinople (a.d. 381), received universally in the Eastern Church and, with an addition introduced in the 6th century a.d., accepted generally throughout western Christendom.
- the formal summary of Christian beliefs promulgated at the first council of Nicaea in 325 ad
- a longer formulation of Christian beliefs authorized at the council of Constantinople in 381, and now used in most Christian liturgies