1. See bitumen.
2. A mixture of bitumen with crushed stone gravel or sand, used for paving or roofing.
tr.v. as·phalt·ed, as·phalt·ing, as·phalts
To pave or coat with asphalt.
[Middle English aspalt, from Medieval Latin asphaltus, from Greek asphaltos.]
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.