Athanasian

[ ath-uh-ney-zhuh n ]

/ ˌæθ əˈneɪ ʒən /

of or relating to Athanasius or to the doctrines ascribed to him.

Theology. a follower of Athanasius or a believer in the Athanasian Creed.

Origin of Athanasian

First recorded in 1580–90; Athanasi(us) + -an

The clown replied that "he had been worshipping nature's God," and proved it by repeating the substance of the Athanasian creed.
Ancient and Modern Celebrated Freethinkers|Charles Bradlaugh, A. Collins, and J. Watts
As I have elsewhere sought to show, this is practically identical with the Athanasian conception of the immanent Deity.
Through Nature to God|John Fiske
Anna-Felicitas remarked that it sounded rather as if they were the Athanasian Creed.
Christopher and Columbus|Countess Elizabeth Von Arnim
Malone began to feel as if he were involved in the Athanasian Creed.
Occasion for Disaster|Gordon Randall Garrett

It was in most respects precisely identical with that in use, only it was purged from all vestiges of the Athanasian heresy.
The English Church in the Eighteenth Century|Charles J. Abbey and John H. Overton