Definition for Defecation
From Biology Forums Dictionary
The expulsion of feces that occurs through the final portion of the digestive canal: the anus; contractions of the rectum and relaxation of associated sphincter muscles expel the feces.
From Biology Forums Dictionary
The expulsion of feces that occurs through the final portion of the digestive canal: the anus; contractions of the rectum and relaxation of associated sphincter muscles expel the feces.