Dictionary > Involution

Involution

Definition
noun, plural: involutions
(1) (biology) Reverting of the uterus and other genital organs to the pre-pregnant size and state following childbirth.
(2) (embryology) The inward movement of an expanding outer layer of cells, thereby forming a dorsal lip in animal gastrulation.
(3) (physiology) The progressive, retrograding or degenerating changes in a senescing (aging) body; catagenesis.
(4) (medicine) Shrinking of an organ.
(5) (general) Turning or rolling inward; enfolding.
Supplement
Word origin: Latin involutio, from volvere (to roll).
Related form(s): involute
Related term(s):


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