Shredded, sloughed intestinal mucosal tissue in the stool or defecation (excretory product evacuated from the bowels): Dr. Wilson sent samples of Hector's xysma, the membranous shreds that were found in the feces of his diarrhea, to the medical laboratory for analysis.

"Sloughed" refers to a layer or mass of dead tissue separated from surrounding living tissue, as in a wound, a sore, or an inflammation.