seasonal affective disorder

noun

1. recurrent winter depression characterized by oversleeping, overeating, and irritability, and relieved by the arrival of spring or by light therapy. Abbreviation: SAD

noun

1. a state of depression sometimes experienced by people in winter, thought to be related to lack of sunlightAbbreviation: SAD

n.

1. A mood disorder occurring during seasons when sunlight is limited, characterized by symptoms of depression.

1. A mood disorder that occurs during seasons when exposure to sunlight is limited, characterized by symptoms of depression.