- 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 invol&umacron;ti&omacron;, invol&umacron;ti&omacron;n-, from invol&umacron;tus, past participle of involvere, to enwrap; see involve.
From Latin involutio, from volvere ‘to roll’.