hormonal /hɔɹˈmoʊnəl/ adjective3 •Pertaining to hormones.The authors also said they attempted to investigate whether there are differing breast cancer risks between hormonal and nonhormonal IUDs. — 2023 •(informal) Of or pertaining to the menstrual cycle. •Strongly affected by one's hormones.All those male bodies and loud, virile male hormonal voices. — 1984 formsmore hormonal · most hormonal