Alluvium
noun
noun ·4 syllables ·Moderate ·College level
Definitions
Noun
- 1 soil, clay, silt or gravel deposited by flowing water, as it slows, in a river bed, delta, estuary or flood plain
- 2 clay or silt or gravel carried by rushing streams and deposited where the stream slows down wordnet
Etymology
From Medieval Latin alluvium (“matter deposited by flowing water”), neuter of alluvius (“deposited by a river”), from Latin alluviō (“washing upon, overflowing”).
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.