NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,380 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.
- GnRH agonist
- listen (… A-guh-nist)
A substance that keeps the testicles and ovaries from making sex hormones by blocking other hormones that are needed to make them. In men, GnRH agonists cause the testicles to stop making testosterone. In women, they cause the ovaries to stop making estrogen and progesterone. Some GnRH agonists are used to treat prostate cancer. Also called GnRHa, gonadotropin-releasing hormone agonist, LHRH agonist, and luteinizing hormone-releasing hormone agonist.