Dictionary

seasonal affective disorder

noun

medical : an illness that makes people feel sad and tired during the winter because there is less light during the day

Full Definition of SEASONAL AFFECTIVE DISORDER

:  depression that tends to recur as the days grow shorter during the fall and winter —abbreviation SAD

First Known Use of SEASONAL AFFECTIVE DISORDER

1983

seasonal affective disorder

noun sea·son·al affective disorder \ˌsēz-ən-əl-\   (Medical Dictionary)

Medical Definition of SEASONAL AFFECTIVE DISORDER

:  depression that tends to recur as the days grow shorter during the fall and winter—abbreviation SAD

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