parasite egg/oocyst count fecal parasite egg count 2014-08-08T13:40:46Z CMO:0002544 The enumeration, i.e. measurement of the total number of parasite eggs present in a specified sample of host feces, the usually solid waste matter discharged from the digestive tract after food has been digested. In parasitology, eggs are fertilized gametes, especially of species such as nematodes, which through further development give rise to larvae and then adult parasites. Parasite eggs are distinguished from oocysts by the lack of a thick encapsulating cyst wall. clinical_measurement_ontology faecal parasite egg count jsmith