1. A form of depression caused by the lack of natural light during the winter months
   - SAD

Encyclopedia: Seasonal affective disorder

• day-to-day
• Dayan
• daybed
• daybook
• dayboy
• daybreak
• daycare
• daydream
• daydreamer
• daydreaming
• dayflower
• dayfly
• daygirl
• daylight
• daylight robbery
• daylight saving
• daylight savings
• daylight vision
• daylight-saving time
• daylight-savings time
• daylily
• daylong
• daymare
• Daypro
• dayroom