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 (hĕt′ə-rō-o͞o′sē-ən, -ou′sē-ən) also Het·er·ou·si·an (hĕt′ə-ro͞o′-, -rou′-)
A Christian who believes that the substance and nature of God the Father and God the Son are different; an Arian.

[From Greek heteroousios, differing in substance : hetero-, hetero- + ousiā, substance, nature; see Homoiousian.]

Het′er·o·ou′si·an, Het′er·ou′si·an adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˌhɛtərəʊˈuːsɪən; -ˈaʊsɪən)
(Ecclesiastical Terms) a Christian who maintains that God the Father and God the Son are different in substance
(Ecclesiastical Terms) of or relating to this belief
[C17: from Late Greek heteroousios, from Greek hetero- + ousia nature]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
He situates the Heteroousians (Aetius and Eunomius) within the philosophical and theological traditions that preceded them.
D., however, upends the ancient characterization of Eunomius by his opponents as a "logic chopper": the Heteroousian theological project was a natural, though problematic, development of mid-fourth-century Christian thought.
Athanasius's opposition of an earlier form of the Heteroousian project frames the theology of Eunomius.