NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,458 terms related to cancer and medicine.
We offer a widget that you can add to your website to let users look up cancer-related terms. Get NCI’s Dictionary of Cancer Terms Widget.
- listen (RAN-duh-mih-ZAY-shun)
- In research, the process by which participants in clinical trials are assigned by chance to separate groups that are given different treatments or other interventions. Neither the researcher nor the participant chooses which treatment or intervention the participant will receive. Using chance to assign people to groups means that the effects of the treatment or intervention that participants receive can be compared more fairly.