NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,413 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.
- listen (noo-MOR-fan)
- A drug used to treat moderate to severe pain. It is also used as a sedative before surgery, to help with anesthesia during surgery, during labor, and to treat anxiety caused by some medical conditions. It is made from morphine and binds to opioid receptors in the central nervous system. Numorphan is a type of opioid and a type of analgesic agent. Also called Opana and oxymorphone hydrochloride.