intussusception
(noun)
noun
1. the folding in of an outer layer so as to form a pocket in the surface
Similar word(s): infolding, introversion, invagination
Definition categories: process
2. (biology) growth in the surface area of a cell by the deposit of new particles between existing particles in the cell wall
Definition categories: process, development, growing, growth, maturation, ontogenesis, ontogeny