• Webster's Revised Unabridged Dictionary
    • n Semi-Arian (Eccl. Hist) A member of a branch of the Arians which did not acknowledge the Son to be consubstantial with the Father, that is, of the same substance, but admitted him to be of a like substance with the Father, not by nature, but by a peculiar privilege.
    • a Semi-Arian Of or pertaining to Semi-Arianism.
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Chambers's Twentieth Century Dictionary
    • Semi-Arian relating to the Christology of the so-called Semi-Arians (Eusebius of C├Žsarea, &c.) who held a middle ground between the Arian hetero-ousia and the orthodox homo-ousia or co-equality of the Son with the Father, asserting the homoi-ousia, or similarity of essence
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Webster's Revised Unabridged Dictionary
See Arian


In literature:

Among Arian subdivisions we find Semi-Arians, Eusebians, Aetians, Eunomians, Acasians, Psathyrians, etc.
"The Freethinker's Text Book, Part II." by Annie Besant
Moreover, Apollinarians, Eunomians, and Semi-arians, mustered in great numbers at Constantinople.
"An Essay on the Development of Christian Doctrine" by John Henry Cardinal Newman