alluvion
C2CEFR level
95/100Rarity: very rare
TechnicalRegister
Land added to a bank or shore by the gradual deposit of waterborne soil, which accrues to the owner.
The additional acreage of alluvion belonged to the farmer whose field the river had slowly extended.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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