Dictionary

depression

noun de·pres·sion \di-ˈpre-shən, dē-\

: a state of feeling sad

: a serious medical condition in which a person feels very sad, hopeless, and unimportant and often is unable to live in a normal way

: a period of time in which there is little economic activity and many people do not have jobs

Full Definition of DEPRESSION

1
a :  the angular distance of a celestial object below the horizon
b :  the size of an angle of depression
2
:  an act of depressing or a state of being depressed: as
a :  a pressing down :  lowering
b (1) :  a state of feeling sad :  dejection
(2) :  a psychoneurotic or psychotic disorder marked especially by sadness, inactivity, difficulty in thinking and concentration, a significant increase or decrease in appetite and time spent sleeping, feelings of dejection and hopelessness, and sometimes suicidal tendencies
c (1) :  a reduction in activity, amount, quality, or force
(2) :  a lowering of vitality or functional activity
3
:  a depressed place or part :  hollow
4
:  low 1b
5
:  a period of low general economic activity marked especially by rising levels of unemployment
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First Known Use of DEPRESSION

14th century

Other Psychology Terms

fetish, hypochondria, intelligence, mania, narcissism, neurosis, pathological, psychosis, schadenfreude, subliminal
DEPRESSION Defined for Kids

depression

noun de·pres·sion \di-ˈpre-shən\

Definition of DEPRESSION for Kids

1
:  an act of pressing down <depression of the brake pedal>
2
:  a hollow place or part <My foot made a depression in the sand.>
3
:  a feeling of sadness <Your support eased my depression.>
4
:  a period of low activity in business with much unemployment
Medical Dictionary

depression

noun de·pres·sion \di-ˈpresh-ən\

Medical Definition of DEPRESSION

1
:  a displacement downward or inward <depression of the jaw>
2
:  an act of depressing or a state of being depressed: as a (1) :  a state of feeling sad (2) :  a mood disorder marked especially 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 <depression of autonomic function> <depression of red blood cells>
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