diuresis: increased secretion of urine; if not due to increased liquid intake or to the action of a diuretic drug it can be a symptom of diabetes mellitus
symptom: (medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease
ratite: flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds