- an entanglement, complication, or intricacy
- Anat. the process of rolling or curling inward, as in the formation of a gastrula
- Biol. a retrograde or degenerative change
- Gram. an involved construction, esp. one created by a clause interposed between a subject and its predicate
- Math. the raising of a quantity to any given power
- the return of an organ to its normal size after distention, as of the uterus after childbirth
- a decline in the normal functions of the human body or of an organ occurring with age, as the changes taking place at menopause
Origin of involutionClassical Latin involutio from involutus, past participle of involvere
- a. The act of involving.b. The state of being involved.
- Intricacy; complexity.
- Something, such as a long grammatical construction, that is intricate or complex.
- Mathematics An operation, such as negation, which, when applied to itself, returns the original number.
- Embryology The ingrowth and curling inward of a group of cells, as in the formation of a gastrula from a blastula.
- Medicine a. A decrease in size of an organ, as of the uterus following childbirth.b. A progressive decline or degeneration of normal physiological functioning occurring as a result of the aging process.
Origin of involutionLatin involūtiō involūtiōn- from involūtus past participle of involvere to enwrap ; see involve .
From Latin involutio, from volvere ‘to roll’.