cortisol
C1CEFR level
40/100Rarity: uncommon
TechnicalRegister
The principal glucocorticoid hormone secreted by the adrenal cortex.
A midnight salivary cortisol is used to screen for endogenous Cushing's syndrome.
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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