Definition of estrogen in US English:

estrogen

(British oestrogen)

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 estrogens and progesterone’
    • ‘Aromatase inhibitors are drugs that reduce the levels of estrogen in your body.’
    • ‘Most of the health benefits of soy have been attributed to its high concentration of isoflavones, including genistein, which resemble natural estrogens in the body.’
    • ‘Although estrogen is best known as a female sex hormone, it exists in small quantities in men, too.’
    • ‘Phytoestrogens, the most well known of which are the isoflavones from soy, are not technically estrogens or steroid hormones at all.’
    • ‘The tenth report newly lists the group of hormones known as steroidal estrogens as ‘known human carcinogens.’’
    • ‘The ovaries also produce the hormones estrogen and progesterone.’
    • ‘Menopause is a time when the body produces less estrogen, a natural combatant of heart disease.’
    • ‘In contrast to the estrogens, progesterone has no apparent effect on liver function.’
    • ‘Furthermore, they discovered that female hormones - estrogens such as estradiol - are to thank for this healthy restraint.’
    • ‘In this form of therapy, women take a combination of the hormones estrogen and progestin.’
    • ‘These cells do not need the hormone estrogen to grow and usually do not respond to antiestrogen therapy.’
    • ‘I figured it definitely has something to do with a sudden drop in the hormone estrogen.’
    • ‘Nor did it make any differences if users were taking estrogen alone or estrogen plus progestin.’
    • ‘There were increases in blood levels of the estrogens, estradiol and estrone, and a reduction of the protective HDL cholesterol.’
    • ‘Her pioneering work on hormones, particularly estrogen, has won her many awards.’
    • ‘It probably relates to the much higher levels of estrogen and other similar hormones in women.’
    • ‘If you have low female hormone levels, you can use an estrogen cream or take hormones.’
    • ‘We defined hormone users as users of estrogen or users of estrogen and progesterone.’
    • ‘The hormone estrogen may also play a role in lupus and could help explain why it is more common in females than males.’
    • ‘Increases in the hormone estrogen may cause your palms to become red and itchy.’
    • ‘There was the hormone estrone, a form of the estrogen prescribed to help menopausal women.’
    • ‘The combined contraceptive pill contains the hormone oestrogen as well as progestogen.’
    • ‘Steroidal estrogens are a group of related hormones that control sex and growth characteristics.’

Origin

1920s: from estrus + -gen.

Pronunciation

estrogen

/ˈɛstrədʒən//ˈestrəjən/