English

Definition of seasonal affective disorder noun from the Oxford Advanced Learner's Dictionary

 

seasonal affective disorder

 noun
noun
BrE
 
; NAmE
 
[uncountable] (abbreviation SAD) Mental and emotional problems
 
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a medical condition in which a person feels sad and tired during late autumn/fall and winter when there is not much light from the sun See related entries: Mental and emotional problems
See the Oxford Advanced American Dictionary entry: seasonal affective disorder