What does the prefix 'micro-' refer to in medical terminology?

The prefix 'micro-' in medical terminology signifies something that is small or minute. It is derived from the Greek word "mikros," meaning small. This prefix is frequently used in various terms to describe small entities, such as microorganisms (tiny living creatures not visible to the naked eye), microscopic (pertaining to things visible only under a microscope), and microvascular (related to very small blood vessels). Understanding the meaning of prefixes like 'micro-' is crucial in medical terminology as it helps to accurately interpret and communicate information about the size and nature of various medical subjects.