alluvial

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

From Latin alluvius (“alluvial”), from alluviō (“an overflowing, inundation”), from alluō (“wash against”). By surface analysis, alluvium + -ial.

The alluvial soil is a rich clay loam. — The Expedition to Borneo of H.M.S. Dido: For the Suppression of Piracy, Henry, Sir Keppel
The Angola mines are alluvial and are operated precisely like those in Belgian territory. — An African Adventure, Isaac Frederick Marcosson
River Bottoms or Alluvion. The surface of our alluvial bottoms is not entirely level. — A New Guide for Emigrants to the West, John Mason Peck

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