Entry 2 senses · 2 variants Webster, 1913 Arianize · A·ri·an·ize · IPA v. i. v. t. 01 v. i. To admit or accept the tenets of the Arians; to become an Arian. 1. To admit or accept the tenets of the Arians; to become an Arian. 02 v. t. To convert to Arianism. 1. To convert to Arianism.