1. Of, like, or in an artery or arteries.
2. Of, relating to, or being the blood in the arteries that has absorbed oxygen in the lungs and is bright red.
3. Being a main road or channel with many branches: an arterial highway; an arterial route.
A through road or street.
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.