NCI Dictionary of Cancer Terms

The NCI Dictionary of Cancer Terms features 8,370 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.

Browse:
cytosine
(SY-toh-seen)
A chemical compound that is used to make one of the building blocks of DNA and RNA. It is a type of pyrimidine.