tan·tra (tŭntrə, tăn-)
Any of a comparatively recent class of Hindu or Buddhist religious literature written in Sanskrit and concerned with powerful ritual acts of body, speech, and mind.
[Sanskrit tantram, doctrine, loom; see ten- in the Appendix of Indo-European roots.]
tantric (-trĭk) adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. 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.