NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,916 terms related to cancer and medicine.
Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.
- ancillary test
- listen (AN-sih-LAYR-ree …)
- In a clinical trial, a medical test on a patient that is not a part of the original study design.