Definition of oestradiol in English:


Line breaks: oes¦tra|diol
Pronunciation: /ˌiːstrəˈdʌɪɒl
, ˌɛstrə-/
(US estradiol)


[mass noun] Biochemistry
A major oestrogen produced in the ovaries.
More example sentences
  • In malignancies of the breast, it is the oestrogen hormone, oestradiol that is the key.
  • The prominent estrogens in women are estradiol, estrone and estriol.
  • Once ovulation takes place, a surge of growth in the luteal cells causes progesterone and some estradiol to be secreted.


1930s: from oestrus + di-1 + -ol.

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