n. pl. ec·sta·sies
1. Intense joy or delight.
2. A state of emotion so intense that one is carried beyond rational thought and self-control: an ecstasy of rage.
3. The trance, frenzy, or rapture associated with mystic or prophetic exaltation.
4. often Ecstasy Slang MDMA.
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.