Dictionary

progesterone

noun pro·ges·ter·one \prō-ˈjes-tə-ˌrōn\

medical : a substance (called a hormone) that occurs naturally in women and female animals

Full Definition of PROGESTERONE

:  a female steroid sex hormone C21H30O2 that is secreted by the corpus luteum to prepare the endometrium for implantation and later by the placenta during pregnancy to prevent rejection of the developing embryo or fetus; also :  a synthetic steroid resembling progesterone in action

Origin of PROGESTERONE

progestin + -sterone
First Known Use: 1935

progesterone

noun pro·ges·ter·one \prō-ˈjes-tə-ˌrōn\   (Medical Dictionary)

Medical Definition of PROGESTERONE

:  a female steroid sex hormone C21H30O2 that is secreted by the corpus luteum to prepare the endometrium for implantation and later by the placenta during pregnancy to prevent rejection of the developing embryo or fetus; also :  a synthetic steroid resembling progesterone in action

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