NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,363 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.
- healthcare proxy
- listen (HELTH-kayr PRAK-see)
- A type of advance directive that gives a person (such as a relative, lawyer, or friend) the authority to make healthcare decisions for another person. It becomes active when that person loses the ability to make decisions for himself or herself. Also called HCP.