Which prefix indicates slowness?

The prefix that indicates slowness is "brady-." This term is derived from the Greek word "bradus," meaning slow. In medical terminology, "brady-" is commonly used to describe a slower than normal rate, especially in relation to heart rate. For example, "bradycardia" refers to a heart rate that is slower than the typical range, usually defined as fewer than 60 beats per minute.

Understanding the meaning of prefixes is crucial when interpreting medical terms, as they provide insight into the condition being described. In this case, "brady-" specifically conveys the idea of slowness, distinguishing it from other prefixes that have different meanings or applications in medical terminology.