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- The process by which a stream's gradient steepens due to increased deposition of sediment.
- The building up of the Earth's surface by deposition; specif., the upbuilding performed by a stream in order to establish or maintain uniformity of grade or slope. See also: gradation Syn: upgrading
- A syn. of accretion, as in the development of a beach. The spread or growth of permafrost, under present climatic conditions, due to natural or artificial causes. AGI
Source: Dictionary of Mining, Mineral, and Related Terms