# alluvial

/ˌæˈɫuviəɫ/ (US) · /ɐlˈuːvɪəl/ (UK) · CEFR C1 · Adjective

Source: https://englishreference.com/word/alluvial
Updated: 2026-05-19

## Definition

relating to soil or land that has been built up by water carrying and dropping sand and dirt.

For teachers: relating to or consisting of alluvium, which is soil or sediment deposited by flowing water. Often used to describe landforms or mineral deposits found in river valleys.

## Examples

- The farmers grow rice in the alluvial soil of the river valley.
- Geologists discovered rich deposits of gold in the alluvial plains along the river's edge.
- The fertile alluvial plains of the region have supported intensive agriculture for centuries, as the annual flooding of the river replenishes the soil with nutrient-rich silt.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.