intussuscept
vt.
5< L intus, within + susceptus, pp. of suscipere: see fol.6 to receive within, itself or into another part; specif., to telescope (one section of the intestines) into another; invaginate

A real four alarm surgical emergency . one segment of small bowel pushes inside another in a way
that obstructs circulation if not promptly treated can lead to necrosis, perforation, peritonitis, and death.