NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,855 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.
- menstrual cycle
- listen (MEN-stroo-ul SY-kul)
- The monthly cycle of hormonal changes from the beginning of one menstrual period to the beginning of the next.