Simple past tense and past participle of transubstantiate.(verb)
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Use "transubstantiated" in a sentence
"At the Mass, the bread offered by the priest is "transubstantiated" into the Body of Christ."
"The Eucharistic Prayer, the most solemn and critical prayer in the mass, through which the bread and wine are transubstantiated, has undergone radical change."
"Maybe his sandwich transubstantiated: water into wine, wine into blood, pastrami into salami."