NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,926 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.

optic tract
(OP-tik trakt)
The nerves that travel from the optic chiasm (place in the brain where some of the optic nerve fibers cross) into certain parts of the brain involved in vision.