involution

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in·vo·lu·tion

 (ĭn′və-lo͞o′shən)
n.
1.
a. The act of involving.
b. The state of being involved.
2. Intricacy; complexity.
3. Something, such as a long grammatical construction, that is intricate or complex.
4. Mathematics An operation, such as negation, which, when applied to itself, returns the original number.
5. Embryology The ingrowth and curling inward of a group of cells, as in the formation of a gastrula from a blastula.
6. 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.

[Latin involūtiō, involūtiōn-, from involūtus, past participle of involvere, to enwrap; see involve.]

in′vo·lu′tion·al adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

involution

(ˌɪnvəˈluːʃən)
n
1. the act of involving or complicating or the state of being involved or complicated
2. something involved or complicated
3. (Zoology) zoology degeneration or structural deformation
4. (Biology) biology an involute formation or structure
5. (Physiology) physiol reduction in size of an organ or part, as of the uterus following childbirth or as a result of ageing
6. (Mathematics) an algebraic operation in which a number, variable, expression, etc, is raised to a specified power. Compare evolution5
7. (Grammar) grammar an involved construction, such as one in which the subject is separated from the predicate by an additional clause
ˌinvoˈlutional adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

in•vo•lu•tion

(ˌɪn vəˈlu ʃən)

n.
1. an act or instance of involving or entangling; involvement.
2. the state of being involved.
3. something complicated.
4. Biol. retrogression; restoration of a former state.
5. Physiol. the regressive changes in the body occurring with old age.
6. a complex grammatical construction in which the subject is separated from its predicate by intervening clauses or phrases.
7. a mathematical function that is its own inverse.
[1605–15; < Medieval Latin involūtiō. See involve, -tion]
in`vo•lu′tion•al, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.involution - reduction in size of an organ or part (as in the return of the uterus to normal size after childbirth)
biological process, organic process - a process occurring in living organisms
2.involution - a long and intricate and complicated grammatical construction
grammatical construction, construction, expression - a group of words that form a constituent of a sentence and are considered as a single unit; "I concluded from his awkward constructions that he was a foreigner"
3.involution - marked by elaborately complex detail
complexity, complexness - the quality of being intricate and compounded; "he enjoyed the complexity of modern computers"
4.involution - the act of sharing in the activities of a groupinvolution - the act of sharing in the activities of a group; "the teacher tried to increase his students' engagement in class activities"
group action - action taken by a group of people
commitment - an engagement by contract involving financial obligation; "his business commitments took him to London"
intervention, intercession - the act of intervening (as to mediate a dispute, etc.); "it occurs without human intervention"
group participation - participation by all members of a group
5.involution - the process of raising a quantity to some assigned power
mathematical operation, mathematical process, operation - (mathematics) calculation by mathematical methods; "the problems at the end of the chapter demonstrated the mathematical processes involved in the derivation"; "they were learning the basic operations of arithmetic"
6.involution - the action of enfolding something
change of shape - an action that changes the shape of something
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

in·vo·lu·tion

n. involución, cambio retrógrado.
English-Spanish Medical Dictionary © Farlex 2012
References in periodicals archive ?
The hepatic synthesis of VDBP is stimulated by estrogen as seen in various studies that showed increase in serum concentration of VDBP in pregnant females and in women taking exogenous estrogen.9 Menopause either involutional or estrogen related is associated with increased bone turnover and risk of osteoporotic fracture owing to multiple factors including low levels of total circulating vitamin D and VDBP.10 The current study was designed to compare the serum levels of vitamin D, VDBP, calcium, phosphate along with biophysical parameters in normal, postmenopausal osteopenic and osteoporotic women and also to examine the relationship between vitamin D, VD, BP and BMD in all three groups.
A unitary model for involutional osteoporosis: estrogen deficiency causes both type I and type II osteoporosis in postmenopausal women and contributes to bone loss in aging men.
Global involutional changes, bilateral old lacunar infarcts and acute infarcts at splenium of corpus callosum and deep white matter along the occipital horn of the right lateral ventricle were identified.
Eyelid ptosis and involutional entropion are frequent eyelid disorders affecting people of advanced age.
involutional process is more markedly evident in Oedipus.
Along with involutional changes (awkwardness, uncertainty in one's own actions, and cognitive decline) and increased stress availability (anxiety and depression), the feelings of helplessness, uselessness and the lack of demand are compounded, which inevitably leads to the aggravation of chronic diseases and frequent readmissions.
Various causes have been described including iatrogenic (most often following blepharoplasty), involutional, thyroid-associated orbitopathy and trauma.
Regular physical activity helps to alleviate age-related involutional changes which occur in human body, it prevents the negative effects of hypokinesia [1], and slows down decline in maximal aerobic capacity [2].
Curupira is an instance of the Wide Trail family of algorithms, which includes the AES cipher, and displays involutional structure, in the sense that the encryption and decryption modes differ only in the key schedule.
The clinical course of KA has been described in 3 stages: proliferative, mature, and involutional. The proliferative stage starts with a firm, smooth, enlarging papule that rapidly grows over a 2-4-week period.
Cicatricial lower lid ectropion is characterized by vertical shortening and/or scarring of the anterior lamella of eyelid and can be the result of thermal or chemical burns, mechanical or surgical trauma/scars, medications, sun damage, chronic inflammation, and involutional changes [1, 2].
Use of testosterone propionate in treatment of involutional psychosis in the male.