Eugenicist (noun)

1. A person who advocates or practices eugenics, which is the science of improving a population by controlled breeding to increase the occurrence of desirable heritable characteristics.
2. A person who supports or practices the selective breeding of human beings to improve the genetic quality of the population.

Origin:

Derived from the greek 'eugenes' meaning 'well-born' and the suffix '-ist' meaning 'one who practices or is a follower of'.

Examples:

1. The eugenicist believed that certain races and classes of people were biologically inferior and that their reproduction should be discouraged or restricted.
2. The eugenicist movement of the early 20th century was based on the idea that certain traits, such as intelligence, were hereditary and that the human race could be improved by selective breeding.
3. The eugenicist's views were criticized for being based on a limited and biased understanding of genetics and for promoting a dangerous and unethical ideology.
4. The eugenicist proposed a program of compulsory sterilization for those deemed unfit to have children.
5. The eugenicist's theories inspired some of the worst abuses of the 20th century, such as the forced sterilization programs of Nazi Germany.