Which prefix means excessive or above normal?

The prefix that means excessive or above normal is "hyper-." This prefix is commonly used in medical terminology to indicate an increased state or condition. For example, "hypertension" refers to abnormally high blood pressure, and "hyperglycemia" indicates elevated levels of glucose in the blood.

Understanding the use of "hyper-" can be critical for interpreting medical terms accurately, as it highlights conditions that exceed normal physiological levels. This knowledge assists health professionals in diagnosing and discussing various medical conditions where these elevated levels are significant for patient care and treatment.