A Nonrenewable resource is a natural resource from the Earth that exists in limited supply, like oil or coal. Once this supply is used up, the resource is gone forever.

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Other /More definition:
Nonrenewable resource is the resource that exists in a fixed amount (stock) in various places in the earth"s crust and has the potential for renewal by geological, physical, and chemical processes taking place over hundreds of millions to billions of years. Examples include copper, aluminum, coal, and oil. We classify these resources as exhaustible because we are extracting and using them at a much faster rate than they were formed. Compare renewable resource.