NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,940 terms related to cancer and medicine.
- listen (SIH-lee-um)
- A plant with seeds that are used as a mild laxative. The outer layer of the seeds swells when wet. This increases the size of stool and helps it pass more easily through the intestines (lower part of the digestive tract). Psyllium is a type of bulk laxative.