eugenics , definition
1. eugenics-the study of methods of improving genetic qualities by selective breeding (especially as applied to human mating). bioscience, life science-any of the branches of natural science dealing with the structure and behavior of living organisms.
Eugenics (/ j uË Ë dÊ É n Éª k s /; from Greek Îµá½Î³ÎµÎ½Î®Ï eugenes 'well-born' from Îµá½ eu, 'good, well' and Î³Î­Î½Î¿Ï genos, 'race, stock, kin') is a set of beliefs and practices that aims at improving the genetic quality of a human population.