Anomoeanism

In 4th-century Christianity, the Anomoeans, also known as Heterousians, Aetians, or Eunomians, were a sect that held to an extreme form of Arianism, claiming that Jesus was neither of the same nature (homoousian) as God the Father nor even a similar nature to God the Father (homoiousian)—the latter being maintained by the semi-Arians.