What does the prefix "hyper-" mean?

The prefix "hyper-" specifically refers to something that is excessive or over a normal level. It is derived from Greek, where it conveys the idea of being above or beyond what is usual. In various medical contexts, "hyper-" is used to indicate conditions that exceed normal limits, such as "hypertension," which refers to high blood pressure, or "hyperglycemia," meaning high blood sugar levels. This understanding is crucial in medical terminology, as it helps in identifying and describing specific conditions related to elevated levels or heightened states in the body.