co·ev·o·lu·tion (kō′ĕv-ə-lshən, -ē-və-)
The process by which two or more interacting species evolve together, each changing as a result of changes in the other or others. It occurs, for example, between predators and prey and between insects and the flowers that they pollinate.
co′e·volve (-ĭ-vŏlv) v.
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:
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.