de·pres·sion
n 1 : a displacement downward or inward < of the jaw> 2 : an act of depressing or a state of being depressed: as a (1) : a state of feeling sad (2) : a psychoneurotic or psychotic disorder marked esp. by sadness, inactivity, difficulty with thinking and concentration, a significant increase or decrease in appetite and time spent sleeping, feelings of dejection and hopelessness, and sometimes suicidal thoughts or an attempt to commit suicide b : a reduction in functional activity, amount, quality, or force < of autonomic function> < of erythrocytes and platelets> .
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