NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,790 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.

leptomeningeal
(LEP-toh-meh-NIN-jee-ul)
Having to do with the two innermost meninges (thin layers of tissue that cover and protect the brain and spinal cord).