NCI Dictionary of Cancer Terms

  • Resize font
  • Print
  • Email
  • Facebook
  • Twitter
  • Google+
  • Pinterest

The NCI Dictionary of Cancer Terms features 7,780 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.

objective improvement
(ub-JEK-tiv im-PROOV-ment)
An improvement that can be measured by the health care provider (for example, when a tumor shrinks or there are fewer cancer cells in the blood).