The Collaborative International Dictionary of English v.0.48:

Eunomian \Eu*no"mi*an\, n. (Eccl. Hist.)
   A follower of Eunomius, bishop of Cyzicus (4th century A.
   D.), who held that Christ was not God but a created being,
   having a nature different from that of the Father. -- a. Of
   or pertaining to Eunomius or his doctrine.
   [1913 Webster]