NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,894 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.

molecular diagnosis
(muh-LEH-kyoo-ler dy-ug-NOH-sis)
The process of identifying a disease by studying molecules, such as proteins, DNA, and RNA, in a tissue or fluid.