Definition of seasonal affective disorder in English:

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seasonal affective disorder

noun

Depression associated with late autumn and winter and thought to be caused by a lack of light.
Example sentences
  • For people with a type of depression called seasonal affective disorder, this need for light takes on greater significance.
  • For many, the lack of sunlight contributes to seasonal affective disorder, depression that grips most strongly in the dead of winter.
  • Many Americans suffer from the form of depression known as seasonal affective disorder, with a strong peak in the fall and winter.

For editors and proofreaders

Syllabification: sea·son·al af·fec·tive dis·or·der

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