Final answer:
Oliguria refers to a urine output of less than 50 ml per day. It is seen in conditions such as fever, shock, vomiting, and diarrhea. Oliguria indicates a significant decrease in urine production.
Step-by-step explanation:
Oliguria refers to a urine output of less than 50 ml per day. It is a condition that is seen in various situations including fever, shock, vomiting, and diarrhea. Oliguria is a significant decrease in urine production and can be an indicator of dehydration or renal disease.