cerebrospinal fluid
B2CEFR level
50/100Rarity: uncommon
TechnicalRegister
The clear fluid that surrounds and cushions the brain and spinal cord.
The cerebrospinal fluid was cloudy with a high white cell count, consistent with bacterial meningitis.
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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