aggrade (third-person singular simple present aggrades, present participle aggrading, simple past and past participle aggraded)
1.to raise the grade or level of (a river valley, a stream bed, etc.) by depositing detritus, sediment, or the like.
1. (transitive) to build up the level of (any land surface) by the deposition of sediment Compare degrade (sense 4) Derived Formsaggradation (ˌæɡrəˈdeɪʃən) nounCollins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollinsPublishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cite This Source
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