mem·oir (mĕmwär′, -wôr′)
1. An account of the personal experiences of an author.
2. often memoirs An autobiography.
3. A biography or biographical sketch.
4. A report, especially on a scientific or scholarly topic.
5. memoirs The report of the proceedings of a learned society.
[French mémoire, from Old French memoire, memory, from Latin memoria; see MEMORY.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.