The process of building up or raising the level of land surface through the deposition of sediment, especially by a river.
From Latin 'ad-' (to) and 'gradus' (step, grade), combined with the suffix '-ation'. Coined in geology to describe how rivers and streams raise their beds over time through sediment accumulation.
Rivers are constantly remodeling the landscape—aggradation is how a river builds up its own bed, while erosion cuts it down; the balance between these determines whether a riverbed rises, falls, or stays stable.
Complete word intelligence in one call. Free tier — 50 lookups/day.