v. ru·mi·nat·ed, ru·mi·nat·ing, ru·mi·nates
1. To turn a matter over and over in the mind.
2. To chew cud.
To reflect on over and over again.
[Latin rūmināre, rūmināt-, from rūmen, rūmin-, throat.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 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.