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noun (uncountable, geology, mining, engineering, construction)
- (Geology) The solid rock that exists at some depth below the ground surface. Bedrock is rock "in place", as opposed to material that has been transported from another location by weathering and erosion.
::In mountainous regions, bedrock can be seen at the surface. However, these occurences are more properly called outcrops. In construction and engineering, it is often desired to place foundations on bedrock in order to improve the stability of a structure.
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