NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,846 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.

latency period
(LAY-ten-see PEER-ee-ud)
The time that passes between being exposed to something that can cause disease (such as radiation or a virus) and having symptoms.