involution

(redirected from involutional)
Also found in: Thesaurus, Medical, Legal, Encyclopedia.
Related to involutional: involutional depression, involutional psychosis, involutional ectropion, involutional ptosis

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.

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

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.
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
Translations

in·vo·lu·tion

n. involución, cambio retrógrado.
References in periodicals archive ?
Degenerative changes may be classified as involutional (primarily related to age) or non-involutional (related to local or systemic conditions).
Interology Deleuzian style is vectorial rather than docile, involutional, negentropic, and creative rather than conservative.
Listening, on the other hand, is an involutional activity that situates the listener within, rather than against, their place.
Two days after he was hospitalized, cranial magnetic resonance imaging showed mild-to-moderate, chronic, small vessel ischemia and involutional changes.
During the post-partum period, the reproductive organs were palpated trans-rectally on days 7, 14, 21, 28, 35 and 42 for inspection of cervical and uterine involutional changes, and abnormal discharges, if any, as per the score card of Sheldon and Noakes (1998) with slight modifications.