優ゆう生せいゆうせいFreq.FrequencyTop 50,000Meanings1nouneugenicsTypically used as part of the compound 優生学 (eugenics) or in related contexts; rarely used as a standalone noun.See also: 優生学優ゆう生せい学がくは、遺い伝でん的てきな改かい良りょうを目め指ざす学がく問もんです。Eugenics is a field of study that aims at genetic improvement.
