NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,957 terms related to cancer and medicine.

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ciliary body
(SIH-lee-ayr-ee BAH-dee)
A part of the middle layer of the wall of the eye. The ciliary body includes the ring-shaped muscle that changes the size of the pupil and the shape of the lens when the eye focuses. It also makes the fluid that fills the eye.