involution

Definition

involution rate

(Adult / Slang)

2. Pertaining to or associated with menopause or climacteric; pertaining to changes occurring during that time of life such as a gradual cessation of menstruation and reproductive capacity, fatigue, and in some instances mild-to-severe anxiety and depression (known as: involutional depression / involutional psychotic reaction / climacteric melancholia / involutional melancholia/ involutional psychosis).