involution

[ in-vuh-loo-shuh n ]
/ ˌɪn vəˈlu ʃən /
SEE SYNONYMS FOR involution ON THESAURUS.COM

noun

Origin of involution

First recorded in 1605–15, involution is from the Medieval Latin word involūtiōn- (stem of involūtiō). See involute, -ion

OTHER WORDS FROM involution

su·per·in·vo·lu·tion, noun

Words nearby involution

involuntary muscle, involute, involute gear, involute teeth, involuted, involution, involutional, involutional melancholia, involutional psychosis, involve, involved

Words related to involution

braid, tendril, rotation, wheeling, volution, twine, convolution, lap, ring, twirl, spiral, scroll, twist, turn, bight, gyration, whorl, wind, circle, roll

Example sentences from the Web for involution

British Dictionary definitions for involution

involution
/ (ˌɪnvəˈluːʃən) /

noun

Derived forms of involution

involutional, adjective

Medical definitions for involution

involution
[ ĭn′və-lōō′shən ]

n.

A decrease in size of an organ, as of the uterus following childbirth.
The ingrowth and curling inward of a group of cells, as in the formation of a gastrula from a blastula.
A progressive decline or degeneration of normal physiological functioning occurring as a result of the aging process. catagenesis

Other words from involution

in′vo•lu′tion•al adj.

Scientific definitions for involution

involution
[ ĭn′və-lōō′shən ]

A mathematical operation, such as negation, which, when applied to itself, returns the original number.
The ingrowth and curling inward of a group of cells, as in the formation of a gastrula from a blastula.
A decrease in size of an organ, as of the uterus following childbirth.