Polyuria is defined as:

Polyuria is defined as excessive urination, which means that an individual produces an unusually large volume of urine over a given period. This condition can be indicative of various underlying health issues, such as diabetes mellitus or diabetes insipidus, where the body has difficulty managing fluid balance, leading to increased urine output. The concept of polyuria is particularly relevant in the context of oncology and other medical fields where monitoring urine output can help assess kidney function and overall fluid management in patients.

Understanding polyuria is important in a clinical setting, as it can be a symptom of significant metabolic dysregulation. Additionally, it is crucial for training in data management and interpretation, especially when tracking patient symptoms and outcomes.