What is the term for a part of a word that appears before the word root and changes its meaning?

The term for a part of a word that appears before the word root and changes its meaning is known as a prefix. Prefixes are attached to the beginning of a root word and can alter the meaning or provide additional details about the condition, location, time, or other attributes associated with the root. For example, in medical terminology, the prefix "hypo-" means "below" or "under," as seen in the word "hypoglycemia," which refers to lower-than-normal blood sugar levels.

Understanding prefixes is essential in the field of emergency medical care, as they help healthcare professionals interpret and communicate complex medical terms more effectively. This knowledge aids in the accurate assessment and documentation of patient information.