excretion defecation http://id.loc.gov/authorities/subjects/sh85036416 http://purl.bioontology.org/ontology/MESH/D003672 http://purl.bioontology.org/ontology/SNOMEDCT/111989001 http://purl.obolibrary.org/obo/GO_0030421 http://purl.obolibrary.org/obo/NCIT_C62787 https://en.wikipedia.org/wiki/Defecation https://www.wikidata.org/wiki/Q204015 The expulsion of feces from the rectum. defecate defecated defecating