- a taking within.
- growth of a cell wall by the deposition of new particles among the existing particles of the wall.
- the slipping of one part within another, as of the intestine.
- invagination of a tubular organ or part, esp the telescoping of one section of the intestinal tract into a lower section, causing obstruction
- growth in the surface area of a cell by the deposition of new material between the existing components of the cell wall
