Any substance, natural or synthetic, that exerts the hormonal effects of the natural estrogen, estradiol, usually by interaction with the estrogen receptor.
Note: Phytoestrogens are substances that occur in plants and have estrogenic activity.
Source:
PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 751 (https://doi.org/10.1515/pac-2015-1202)