WordNet
fecal impaction
n. accumulation of hardened feces in the rectum or lower colon which the person cannot move
Wikipedia
Fecal impaction
A fecal impaction is a solid, immobile bulk of human feces that can develop in the rectum as a result of chronic constipation. A related term is fecal loading which refers to a large volume of stool in the rectum of any consistency.
Usage examples of "fecal impaction".
Also every likelihood of decubitus ulcers, lifelong fecal impaction and incomplete micturition.