Eccl. Also 9 exouc-, exukontian. [f. Eccl. Gr. ἐξουκόντι-ος (f. ἐξ out of + οὐκ not + ὄντ-ων, gen. pl. of pr. pple. of εἶναι to be) + -AN.] (See quots.)
1844. trans. Socrates Ecci. Hist., II. xlv. 230. They [Arians] were also termed Exucontians by those at Antioch who embraced the orthodox faith.
1875. Encycl. Brit., II. 537. [Arius said] He is of a substance that once was not (ἐξ ουκ ὄντων)hence the name of Exoucontians sometimes given to his followers.
1877. P. Smith, in Dict. Chr. Biog., s.v. Arianism, The Arians were also called Exukontians.