isosthenuria
C2CEFR level
99/100Rarity: very rare
TechnicalRegister
The excretion of urine whose osmolality is fixed at that of plasma, reflecting a lost capacity to concentrate or dilute.
Isosthenuria with a urine osmolality stuck near 300 confirmed advanced tubular dysfunction.
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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