NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,879 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.

distal urethra
(DIS-tul yoo-REE-thruh)
The part of the urethra closest to the outside of the body. The urethra is the tube through which urine leaves the body. In women, the distal urethra is approximately the last ½ inch, and in men it is the part of the urethra in the penis.