v. cor·rod·ed, cor·rod·ing, cor·rodes
1. To destroy (a metal or alloy) gradually, especially by oxidation or chemical action: The acid corroded the metal.
2. To impair steadily; deteriorate: "Doubt and mistrust could creep into our lives, corroding personal and professional relationships" (Philip Taubman).
To be eaten or worn away.
[Middle English corroden, from Latin corrōdere, to gnaw away : com-, intensive pref.; see COM- + rōdere, to gnaw; see rēd- in the Appendix of Indo-European roots.]
cor·rodi·ble, cor·rosi·ble (-rōsə-bəl) 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.