[in-vuh-loo-shuh n] /ˌɪn vəˈlu ʃən/
an act or instance of involving or entangling; involvement.
the state of being involved.
Biology. retrograde development; degeneration.
Physiology. the regressive changes in the body occurring with old age.
Grammar. a complex construction in which the subject is separated from its predicate by intervening clauses or phrases.
Mathematics. a function that is its own inverse.
the act of involving or complicating or the state of being involved or complicated
something involved or complicated
(zoology) degeneration or structural deformation
(biology) an involute formation or structure
(physiol) reduction in size of an organ or part, as of the uterus following childbirth or as a result of ageing
an algebraic operation in which a number, variable, expression etc, is raised to a specified power Compare evolution (sense 5)
(grammar) an involved construction, such as one in which the subject is separated from the predicate by an additional clause
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)
[in-vuh-loo-shuh-nl] /ˌɪn vəˈlu ʃə nl/ adjective 1. of, relating to, or characteristic of : involutional symptoms. noun 2. a person who suffers from .
noun, Psychiatry. 1. (formerly) extreme depression related to menopause or, less frequently, the male climacteric. involutional melancholia n. A form of depression that occurs in late middle age, sometimes accompanied by paranoia.
- Involutional psychosis
involutional psychosis n. A mental disturbance occurring during menopause or later life, characterized chiefly by depression.
[in-volv] /ɪnˈvɒlv/ verb (used with object), involved, involving. 1. to include as a necessary circumstance, condition, or consequence; imply; entail: This job involves long hours and hard work. 2. to engage or employ. 3. to affect, as something within the scope of operation. 4. to include, contain, or comprehend within itself or its scope. 5. […]