oestrogen

British  

/ ˌɛstrəˈdʒɛnɪk, ˌiːstrəˈdʒɛnɪk, ˈɛstrə-, ˌiːstrə-, ˌɛstrə-, ˈiːstrədʒən /

noun

1. any of several steroid hormones, that are secreted chiefly by the ovaries and placenta, that induce oestrus, stimulate changes in the female reproductive organs during the oestrous cycle, and promote development of female secondary sexual characteristics

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Other Word Forms

• oestrogenic
  adjective
• oestrogenically
  adverb

Etymology

Origin of oestrogen

C20: from _oestrus + _-gen

Example Sentences

See Examples For:

oestrogen

It then rises, along with oestrogen, during the latter stages, bringing your body temperature back down.

From BBC ● Jul. 8, 2026

Hot flushes and night sweats are common for perimenopausal and menopausal women due to lowering oestrogen, according to Dr Arif.

From BBC ● Jul. 8, 2026

One father, who is taking separate legal action against the clinic, told the BBC his 16-year-old son forged his mother's signature to access hormone treatment and was prescribed oestrogen without his parents' knowledge.

From BBC ● Jun. 11, 2026

The pill is an oral selective oestrogen receptor, designed to fight tumors driven by the hormone estrogen, which are estimated to account for up to 70% of all breast cancer cases.

From The Wall Street Journal ● Nov. 18, 2025

We can give you some other pills that will give your body the oestrogen it ought to be producing.

From Identity by Frikki, Aiko