In IBS, there may be increased mucus production by the lining of the intestine. That mucus is then passed in the stool. Mucus is more often associated with diarrhea-predominant IBS than with constipation-predominant IBS or alternating type IBS (IBS-A).
MUD. n. A computer program, usually running over the Internet, that allows multiple users to participate in virtual-reality role-playing games.
a racehorse able to perform well on a wet, muddy track. 2. an athlete who performs well in muddy conditions. Origin of mudder. 1900-1905. First recorded in 1900-05; mud + -er1.