What prefix refers to stone or calculus in a medical context?

The prefix that refers to stone or calculus in a medical context is "-lith." This term originates from the Greek word "lithos," which means stone. In medical terminology, it is commonly used to describe conditions related to the presence of stones or calculi in the body, such as "nephrolithiasis," which refers to kidney stones. The use of "-lith" is integral to understanding various medical diagnoses and procedures associated with stones in organs, helping health care professionals communicate more effectively.

In contrast, the other terms in the question relate to different aspects of medical terminology. The suffix "-itis" refers to inflammation, which is unrelated to stones. The suffix "-gram" denotes a recording, often used in imaging techniques or diagnostic tests, while "-scope" implies viewing or examination, typically through an instrument. Understanding these distinctions assists medical professionals in accurately interpreting and utilizing medical language in practice.