Definition of oestradiol in English:

oestradiol

(US estradiol)

noun

Biochemistry
  • [mass noun] A major oestrogen produced in the ovaries.

    • ‘Testosterone and estradiol follow this rule, but progesterone is an exception.’
    • ‘In malignancies of the breast, it is the oestrogen hormone, oestradiol that is the key.’
    • ‘Once ovulation takes place, a surge of growth in the luteal cells causes progesterone and some estradiol to be secreted.’
    • ‘Even though the ovaries cease producing estradiol, estriol continues to be made by the adrenal glands and in fat cells.’
    • ‘The prominent estrogens in women are estradiol, estrone and estriol.’

Origin

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

Pronunciation

oestradiol

/ˌiːstrəˈdʌɪɒl//ˌɛstrəˈdʌɪɒl/