tr.v. o·ver·bur·dened, o·ver·bur·den·ing, o·ver·bur·dens
1. To burden with too much weight; overload.
2. To subject to an excessive burden or strain; overtax.
1. An excessive burden; an overload.
a. Material overlying a useful mineral deposit.
b. Sedimentary rock covering older crystalline layers.
3. Archaeology A sterile stratum overlying a stratum bearing traces of the culture being studied.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.