homoiousian

noun
ho·moi·ou·si·an | \ hō-ˌmȯi-ˈü-zē-ən , hä- , -ˈü-sē- \

Definition of homoiousian 

: an adherent of an ecclesiastical party of the fourth century holding that the Son is essentially like the Father but not of the same substance

First Known Use of homoiousian

1732, in the meaning defined above

History and Etymology for homoiousian

Late Greek homoiousios of like substance, from Greek homoi- homeo- + ousia essence, substance, from ont-, ōn, present participle of einai to be — more at is

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The first known use of homoiousian was in 1732

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