overburden[ō′vər bʉrd′'n; for n. ō′vər bʉrd′'n]
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
to burden oppressively; weigh down
- something that overburdens
- Geol. soil, rock, etc. that is covering or overlying a useful deposit, as of ore
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
transitive verb o·ver·bur·dened, o·ver·bur·den·ing, o·ver·bur·dens
- To burden with too much weight; overload.
- To subject to an excessive burden or strain; overtax.
- An excessive burden; an overload.
- Geology a. Material overlying a useful mineral deposit.b. Sedimentary rock covering older crystalline layers.
- Archaeology A sterile stratum overlying a stratum bearing traces of the culture being studied.