HETEROUSIANS, composed of ετερος , and ουσια , substance, a sect or branch of Arians, the followers of Aetius, and from him denominated Aetians. They were called Heterousii, because they held, not that the Son of God was of a substance like, or similar to, that of the Father, which was the doctrine of another branch of Arians, thence called Homoousians, Homoousii; but that he was of another substance different from that of the Father.
Richard Watson was one of the greatest theologians the Methodist Church has ever known. His dictionary has proven to be a highly valuable resource even today.Wikipedia
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