tr.v. tran·sub·stan·ti·at·ed, tran·sub·stan·ti·at·ing, tran·sub·stan·ti·ates
1. To change (one substance) into another; transmute.
2. Christianity To change the substance of (the Eucharistic bread and wine) into the body and blood of Jesus.
[Medieval Latin trānsubstantiāre, trānsubstantiāt- : Latin trāns-, trans- + Latin substantia, substance; see SUBSTANCE.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.