... is the Roman Catholic doctrine that the bread and wine used in the Eucharist (Holy Communion) miraculously change into the actual body and blood of Jesus Christ, while retaining their external appearance, taste and smell.  

I knew what the word meant in the third grade and even though from the get go I thought it was a crock, I went on to my shortly thereafter  career as a cathedral parish altar boy who mastered Latin and getting out of class to serve at funerals. 

et plebs tua laetabitur in te 

transubstantiation

noun

tran·​sub·​stan·​ti·​a·​tion ˌtran(t)-səb-ˌstan(t)-shē-ˈā-shən 

the miraculous change by which according to Roman Catholic dogma the eucharistic elements at their consecration become the body and blood of Christ while keeping only the appearances of bread and wine.    I knew this word and understood  what it meant in the third grade. and instead of introducing me to the belief I needed to embrace, I made me think ... what a crock. even though I went on to pursue my career as an altar boy who spoke Latin. et pleabs tuae lababittor intae.

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