Metousiosis
Metousiosis is a Greek term (μετουσίωσις) that means a change of ousia (οὐσία 'essence, inner reality'). == History == The declaration of the 1672 Synod of Jerusalem is quoted by J.M. Neale (History of Eastern Church, Parker, Oxford and London, 1858) as follows: "When we use the word metousiosis, we by no means think it explains the mode by which the bread and wine are converted into the Body and Blood of Christ, for this is altogether incomprehensible [...] but we mean that the bread and wine are changed into the Body and Blood of the Lord, not figuratively or symbolically, nor by any extraordinary grace attached to them ...