A substance that may prevent the formation of blood vessels. In anticancer therapy, an angiogenesis inhibitor prevents the growth of blood vessels from surrounding tissue to a solid tumor.

Chemicals produced by the body which stop the growth of new blood vessels. Because cancerous tumors must have a supply of new blood vessels in order to keep growing, angiogenesis inhibitors are being tested as a treatment for lymphoma and other cancers.

Drugs that interfere with the growth of blood vessels in the tumor, thus starving the tumor of the nutrients and oxygen it needs to grow. Also called angiostatic therapy.