alluvion
- noun
- /əˈluːviən/
- Specialized
- During the flood, thick alluvion was deposited onto the fields along the riverbank.
Examples
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Much of the delta owes its fertility to layers of ancient alluvion.
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Farmers rely on alluvion to improve soil fertility.
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Construction was delayed because the site was covered in loose alluvion from previous floods.
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The riverbank was enriched with alluvion after the heavy rains.
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The floodplain was enriched with rich alluvion after the river overflowed its banks.
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Farmers often appreciate the nutrient-rich alluvion that is deposited on their fields each spring.
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The construction crew found layers of alluvion that had built up over years along the riverbed.
Synonyms
17
3.7
Fine soil left by moving water in a river or harbor
1
5.6
Loose soil like sand or clay that a river leaves when it slows
1
4.2
Fine earth left by rivers that is soft and very good for growing crops
1
8.9
Loose sand, clay, and small stones left by river water
1
6.0
Soil, sand or small stones that a river drops when it slows down
How Coarse
Surface Forms
Etymology
Alluvion comes from a Latin word that meant 'to wash toward', from the parts ad- 'to' and luere 'to wash'. Think of water washing silt and soil onto a riverbank, and that is why alluvion can mean the soil or sediment left by water.