What is the medical term for iodine?

The medical term for iodine is derived from the root "iod/o," which specifically refers to iodine in various medical and chemical contexts. This prefix allows for the formation of further terms related to iodine, such as iodination (the process of introducing iodine into a compound). Understanding this root is essential for recognizing and interpreting a range of medical terminology that involves iodine, especially in contexts such as diagnostics, imaging (like iodine-based contrast agents), and thyroid function.

The other options represent different roots that refer to unrelated terms in medicine. "Ir/o" pertains to the iris of the eye, "jejun/o" relates to the jejunum (part of the small intestine), and "kerat/o" refers to the cornea or other hard structures. Each of these prefixes is clinically relevant but does not have a connection to iodine, which underscores why "iod/o" is the correct term for this element.