unipolar disorder

noun

: major depressive disorder

Selected groups of patients with bipolar and unipolar disorder have an increased mortality rate from suicide and natural causes of death.

—Urban Osby et al.

Word History

First Known Use

1975, in the meaning defined above

Medical Definition

unipolar disorder

noun

: major depressive disorder

Selected groups of patients with bipolar and unipolar disorder have an increased mortality rate from suicide and natural causes of death.

—Urban Osby et al., Archives of General Psychiatry