Definitions

1. noun

a steroid hormone produced mainly by the ovaries in the female and to a lesser extent by the testes in the male, regulating the reproductive and sexual health in both sexes

“The doctor explained that the medication was designed to regulate the production of oestrogen in the body”

2. noun

any of a group of hormones that have the same effects as those produced by the ovaries

“Oestrogen levels in the woman’s blood were measured to determine her fertility”

3. noun

a female sex hormone

“The doctor prescribed her oestrogen supplements to alleviate her menopausal symptoms”