Definition of oestrogen in English:

oestrogen

(US estrogen)

noun

  • Any of a group of steroid hormones which promote the development and maintenance of female characteristics of the body. Such hormones are also produced artificially for use in oral contraceptives or to treat menopausal and menstrual disorders:

    ‘there is a monthly cycle of oestrogens and progesterone’
    • ‘The tenth report newly lists the group of hormones known as steroidal estrogens as ‘known human carcinogens.’’
    • ‘In this form of therapy, women take a combination of the hormones estrogen and progestin.’
    • ‘Furthermore, they discovered that female hormones - estrogens such as estradiol - are to thank for this healthy restraint.’
    • ‘The combined contraceptive pill contains the hormone oestrogen as well as progestogen.’
    • ‘The ovaries also produce the hormones estrogen and progesterone.’

Origin

1920s: from oestrus + -gen.

Pronunciation

oestrogen

/ˈiːstrədʒ(ə)n//ˈɛstrədʒ(ə)n/