D defs.my
Entry 1 sense Webster, 1913

seasonal affective disorder

/sēz'-ən-əl əf-ĕk'-tĭv dĭs-ôr'-dẽr/ · IPA
01 n. A form of mild depression that occurs in winters, associated with reduction in the amount of sunlight. It is characterized by oversleeping…
  1. 1.
    A form of mild depression that occurs in winters, associated with reduction in the amount of sunlight. It is characterized by oversleeping, irritability, and sometimes overeating. It can be treated by light therapy and usually disappears with the arrival of spring.