1. Of or relating to a large geographic region.
2. Of or relating to a particular region or district.
3. Of or affecting a region of the body: regional pain.
4. Of or characteristic of a form of a language that is distributed in identifiable geographic areas and differs in pronunciation, grammar, or vocabulary from the standard form.
Something, such as a magazine or a company branch, that serves a region: "earlier attempts to launch glossy regionals for women" (Business Week).
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.