letrozole

Definition of letrozole
National Cancer Institute

letrozole

(LEH-truh-zole)
A drug used to treat certain types of breast cancer in postmenopausal women. It is also being studied in the treatment of other types of cancer. Letrozole lowers the amount of estrogen made by the body. This may stop the growth of cancer cells that need estrogen to grow. Letrozole is a type of aromatase inhibitor. Also called Femara.

Source: NCI Dictionary of Cancer Terms