tr. & intr.v. cor·rad·ed, cor·rad·ing, cor·rades
To erode or be eroded by abrasion.
[Latin corrādere, to scrape together : com-, com- + rādere, to scrape; see rēd- in the Appendix of Indo-European roots.]
cor·rasion (-rāzhən) n.
cor·rasive (-sĭv, -zĭv) adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.