| involution | 1. A rolling or turning inward. 2. One of the movements involved in the gastrulation of many animals. 3. A retrograde change of the entire body or in a particular organ, as the retrograde changes in the female genital organs that result in normal size after delivery. 4. The progressive degeneration occurring naturally with advancing age, resulting in shrivelling of organs or tissues. Origin: L. Involutio, volvere = to roll (18 Nov 1997) |
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| involution cyst | A mammary cyst occurring at the menopause, due to fibrocystic disease. (05 Mar 2000) |
| involution form | An irregular or atypical bacterial cell produced as a result of exposure to unfavorable conditions. (05 Mar 2000) |
| involution of the uterus | The process of reduction of the uterus to its normal nonpregnant size and state following childbirth. (05 Mar 2000) |
| involutional | Relating to involution. (05 Mar 2000) |
| involutional depression | Depression or psychosis first occurring in the involutional years (40 to 55 for women, 50 to 65 for men). (05 Mar 2000) |
| involutional melancholia | A depressive disorder of middle life, commonly associated with the climacteric. (05 Mar 2000) |
| involutional psychosis | An obsolete term for mental disturbance occurring during the menopause or later life. (05 Mar 2000) |
| senile involution | The retrogression of vital organs and psychological processes incident to aging. (05 Mar 2000) |
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