progesterone

Etymology

From pro- (“supporting”) + Latin gestāre (“to bear, to carry”) + -one (“a ketone”).

noun

  1. (biochemistry, steroids, uncountable) A steroid hormone, secreted by the ovaries, whose function is to prepare the uterus for the implantation of a fertilized ovum and to maintain pregnancy.
  2. (biochemistry, steroids, countable) A synthetic version of the compound, used in contraceptive pills and other pharmaceutical products.

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