'Nicene Creed' definitions:

Definition of 'Nicene Creed'

noun

(Christianity) a formal creed summarizing Christian beliefs; first adopted in 325 and later expanded

From: GCIDE

Nicene \Ni"cene\, a. [L. Nicaenus, fr. Nicaea Nice, Gr. ?.] Of or pertaining to Nice, a town of Asia Minor, or to the ecumenical council held there a. d. 325. [1913 Webster]
Nicene Creed, a summary of Christian faith, composed and adopted by the Council of Nice, against Arianism, a. d.
325, altered and confirmed by the Council of Constantinople, a. d. 381, and by subsequent councils. [1913 Webster]

From: GCIDE

Creed \Creed\ (kr[=e]d), n. [OE. credo, crede, AS. creda, fr. L. credo I believe, at the beginning of the Apostles' creed, fr. credere to believe; akin to OIr. cretim I believe, and Skr. [,c]raddadh[=a]mi; [,c]rat trust + dh[=a] to put. See Do, v. t., and cf. Credo, Grant.]
1. A definite summary of what is believed; esp., a summary of the articles of Christian faith; a confession of faith for public use; esp., one which is brief and comprehensive. [1913 Webster]
In the Protestant system the creed is not coordinate with, but always subordinate to, the Bible. --Schaff-Herzog Encyc. [1913 Webster]
2. Any summary of principles or opinions professed or adhered to. [1913 Webster]
I love him not, nor fear him; there's my creed. --Shak. [1913 Webster]
Apostles' creed, Athanasian creed, Nicene creed. See under Apostle, Athanasian, Nicene. [1913 Webster]