Homoousion

Meaning

Noun

• The inclusion of the term ὁμοούσιος in the Nicene Creed to describe the principle that the Son is ‘of one substance’ with the Father (as opposed to the Homoiousion).

Origin

• From ecclesiastical Koine Greek ὁμοούσιον, neuter of ὁμοούσιος, formed by combining ὁμός and οὐσία with the adjectival morpheme -ῐος.