Which root means crown or circle?

• A. Cardi/o
• B. Crypt/o
• C. Coron/o
• D. Enter/o

Answer: (C)

The main concept is that roots carry the core meaning of the term. coron/o comes from corona meaning crown, and it is used for structures that form a crown or circle around something, such as the coronary arteries that encircle the heart or a coronal view related to a crown-like aspect. The other roots point to different parts or qualities: cardi/o refers to the heart, crypt/o means hidden, and enter/o concerns the intestine. So coron/o is the best match for crown or circle.