involution /in-və-lūˈshən or -looˈ/

1. The action of involving
2. The state of being involved or entangled
3. Complicated grammatical construction
4. Raising to a power (mathematics)
5. The condition satisfied by a system of pairs of points in a straight line such that the rectangle contained by their distances from a fixed point in that line (the centre of involution) is constant (geometry)
6. Degeneration
7. Return to normal size, as the uterus after birth (zoology)
8. Atrophy of an organ, eg in old age

involuˈtional adjective

involutional psychosis or involutional melancholia noun

A psychosis occurring in middle life, with feelings of anxiety, futility, guilt, and, in some cases, with delusions of persecution

• pseudo-Gothic
• pseudograph
• pseudographies
• pseudographs
• pseudography
• pseudohermaphroditism
• pseudohexagonal symmetry
• pseudologia
• pseudologia fantastica
• pseudologias
• pseudologies
• pseudologue
• pseudologues
• pseudology
• pseudomartyr
• pseudomartyrs
• pseudomembrane
• pseudomembranes
• pseudomonad
• pseudomonades
• pseudomonads
• pseudomonas
• pseudomorph
• pseudomorphic
• pseudomorphism