progesterone pro·ges·ter·one (prō-jěs'tə-rōn')
A steroid hormone secreted by the corpus luteum and by the placenta, that acts to prepare the uterus for implantation of the fertilized ovum, to maintain pregnancy, and to promote development of the mammary glands. Also called corpus luteum hormone, luteohormone, progestational hormone.
A drug prepared from natural or synthetic progesterone, used for the prevention of miscarriage and the treatment of menstrual disorders.
|progesterone (prō-jěs'tə-rōn') Pronunciation Key
A steroid hormone that prepares the uterus for pregnancy, maintains pregnancy, and promotes development of the mammary glands. The main sources of progesterone are the ovary and the placenta. Chemical formula: C21H30O2.