Definition of progesterone in English:


Line breaks: pro|ges¦ter|one
Pronunciation: /prəˈdʒɛstərəʊn


[mass noun] Biochemistry
  • A steroid hormone released by the corpus luteum that stimulates the uterus to prepare for pregnancy.
    More example sentences
    • You stick it on your skin and it releases two hormones - oestrogen and progesterone.
    • During pregnancy, the amount of two female hormones, oestrogen and progesterone, increases.
    • The ovaries also produce the female hormones, oestrogen and progesterone.


1930s: blend of progestin and the German synonym Luteosteron (from corpus luteum + sterol).

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Word of the day skosh
Pronunciation: skəʊʃ
a small amount; a little