意味: ゆうせいのadj. (Kanji=優性の) dominant, controlling, commandingadj. (Kanji=遊星の) planetary, of planets, pertaining to planetsadj. (Kanji=有性の) sexual, pertaining to reproduction through the union of male and female gametesadj. (Kanji=優生の) eugenic, pertaining to eugenics, pertaining to the study of racial improvement through selective breeding and other methods