Found in the following dictionaries
OTCWL2014 (NASPA Word List 2014)
"Aggradational" Definition
adjective
Pertaining to or formed by aggradation.
Source: Wiktionary
Pertaining to or effected by means of aggradation.
Source: Century Dictionary
Effecting an upbuilding of sediments: contrasted with degradational agencies or those which remove material.
Source: Century Dictionary
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