aggradation

noun ag·gra·da·tion \ ˌa-grə-ˈdā-shən \

Definition of aggradation

: a modification of the earth's surface in the direction of uniformity of grade by deposition

aggradational

play \-shnəl, -shə-nᵊl\ adjective

Recent Examples of aggradation from the Web

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Origin and Etymology of aggradation

aggrade "to fill with detrital material, build up by aggradation" (from ad- + -grade, as in degrade) + -ation (after degradation)
Note: Aggrade and aggradation were apparently introduced by the geologist Rollin D. Salisbury in Surface Geology: Report of Progress, from the Annual Report of the State Geologist for 1892, Trenton, N.J.: Geological Survey of New Jersey, 1893, p. 103.


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