level

lev·el

noun \ˈlev-əl\

Definition of LEVEL

1

: a characteristic and fairly uniform concentration of a constituent of the blood or other body fluid <a normal blood-sugar level>

2

a : a degree of ability or aptitude or measure of performance b : a grade of mental and emotional development or maturity <evidence as to levels of personality development (e.g., anal, oral)—G. P. Murdock>