Involution



[in-vuh-loo-shuh n] /ˌɪn vəˈlu ʃən/

noun
1.
an act or instance of involving or entangling; involvement.
2.
the state of being involved.
3.
something complicated.
4.
Botany, Zoology.

5.
Biology. retrograde development; degeneration.
6.
Physiology. the regressive changes in the body occurring with old age.
7.
Grammar. a complex construction in which the subject is separated from its predicate by intervening clauses or phrases.
8.
Mathematics. a function that is its own inverse.
/ˌɪnvəˈluːʃən/
noun
1.
the act of involving or complicating or the state of being involved or complicated
2.
something involved or complicated
3.
(zoology) degeneration or structural deformation
4.
(biology) an involute formation or structure
5.
(physiol) reduction in size of an organ or part, as of the uterus following childbirth or as a result of ageing
6.
an algebraic operation in which a number, variable, expression etc, is raised to a specified power Compare evolution (sense 5)
7.
(grammar) an involved construction, such as one in which the subject is separated from the predicate by an additional clause
n.

late 14c., from Latin involutionem (nominative involutio) “a rolling up,” noun of action from past participle stem of involvere (see involve). Related: Involutional.

involution in·vo·lu·tion (ĭn’və-lōō’shən)
n.

in’vo·lu’tion·al adj.
involution
(ĭn’və-l’shən)

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