What prefix is used to denote "one" in medical terms?

• A. mono-
• B. multi-
• C. nulli-
• D. pan-

Answer: (A)

The prefix that denotes "one" in medical terminology is "mono-." This prefix is derived from the Greek word "monos," which translates to "single" or "alone." In medical contexts, you may see "mono-" used in terms such as "monocyte," referring to a type of white blood cell that is single-nucleated, or "mononucleosis," which is often characterized by having an increased number of monocytes.

Understanding prefixes is vital for deciphering medical terms, as they often provide essential information about the quantity or condition related to the root word. The other prefixes listed have different meanings: "multi-" means "many," "nulli-" indicates "none," and "pan-" refers to "all." Knowing these distinctions helps accurately interpret and communicate medical concepts.