hormone
definition of hormone
1. a group of chemicals made by glands in the body. Hormones circulate in the bloodstream and control the actions of certain cells or organs. Some hormones can also be manufactured.1
hormone replacement therapy
definition of hormone replacement therapy
1. HRT. Hormones (estrogen, progesterone, or both) given to women after menopause to make up for the hormones no longer made by the ovaries. Also called hormone therapy.1