NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,208 terms related to cancer and medicine.
We offer a widget that you can add to your website to let users look up cancer-related terms. Get NCI’s Dictionary of Cancer Terms Widget.
- unsealed internal radiation therapy
- listen (...RAY-dee-AY-shun THAYR-uh-pee)
- Radiation therapy given by injecting a radioactive substance into the bloodstream or a body cavity, or by swallowing it. This substance is not sealed in a container.