intussusception

(in"tii-sus-sep's hun) [L. int us, within, 4- suscipere, to take up.] Invagination; the infolding of one segment of the intestine within another segment, colic i., the ensheathing of one portion of the colon into another, il'eal i., a form in which one portion of the ileum is ensheathed in another portion of the same division of the bowel ileoce'cal i., a form in which the lower segment of thfe ileum pa es through the valve of the colon into the cecum, ileocolic, a form in which the lower portion of the ileum with the valve of the colon pa es into the ascending colon, ret'rograde i., the invagination of a lower segment of the bowel into one just above.