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oestradiol

US estradiol

noun
  1. the most potent oestrogenic hormone secreted by the mammalian ovary: synthesized and used to treat oestrogen deficiency and cancer of the breast. Formula: C 18 H 24 O 2
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Word Origin

C20: from New Latin, from oestrin + di- 1 + -ol 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012