gynaecologist UK /ˌɡaɪ.nəˈkɒl.ə.dʒɪst/US /ˌɡaɪ.nəˈkɑː.lə.dʒɪst/ noun1 •A physician specializing in diseases of the female reproductive system.Dr. Schirren: The members of this round table keep on speaking about urologists and gynecologists but you never mention andrologists. — 1986 formsgynaecologists