We don't have synonyms for homoousians yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are homoousian, homoiousians and homoiousian.
(adj) :
Having the same essence or substance, especially with reference to the first and second persons of the Trinity (Father and Son).
(n) :
(historical) One of those, in the 4th century, who accepted the Nicene Creed and maintained that the Son had the same essence or substance with the Father.
(adj) :
Having the same essence or substance, especially with reference to the first and second persons of the Trinity (Father and Son).
(n) :
(historical) One of those, in the 4th century, who accepted the Nicene Creed and maintained that the Son had the same essence or substance with the Father.