Meaning: ゆうせいn. (Kanji=優勢) superiority, superior power, predominance, preponderancen. (Kanji=優性) dominance, control, dominationadj. (Kanji=優生) eugenic, pertaining to eugenics, pertaining to the study of racial improvement through selective breeding and other methodsadj. (Kanji=有声) voiced, vocal, expressed vocallyn. (Kanji=有性) sexuality, state of being either male or femalen. (Kanji=郵政) postal servicesn. (Kanji=遊星) planetn. (Kanji=雄性) malenessadj. (Kanji=優勢な) predominant, superior