xenoestrogenEnglishOxford Dictionary of Englishxenoestrogen /ˌzɛnəʊˈiːstrədʒ(ə)n , ˌzɛnəʊˈɛstrədʒ(ə)n / ▸ noun [mass noun] Physiology any natural or synthetic compound introduced into the body that mimics the effects of oestrogen or promotes its production. – ORIGIN 1990s: from xeno- + oestrogen.