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Tri·den·tine (trī-dĕntīn, -tēn)
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adj.
1. Of or relating to an ecumenical council held by the Roman Catholic Church in Trent, Italy, from 1545 to 1563, as a response to calls for reform and the spread of Protestantism.
2. Of or relating to the decrees, reforms, or results of that council: the Tridentine Catechism.
n.
A Roman Catholic who rigorously conforms to the Tridentine Creed formulated at that council.

[Medieval Latin Tridentīnus, from Latin, area around Tridentum, from Tridentum (Trent).]

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:

    Indo-European Roots

    Semitic Roots

    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.