sediment
B1CEFR level
30/100Rarity: fairly common
TechnicalRegister
The solid material that settles at the bottom of a fluid sample, examined especially in urine.
The urine sediment was resuspended before a drop was placed on the slide for microscopy.
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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