Condition as to ancestors; ancestral lineage; hence, birth or honorable descent.
A series of ancestors or progenitors; lineage, or those who compose the line of natural descent.
A social philosophy or practice which advocates the improvement of human hereditary qualities through selective breeding, either by encouraging people with good genetic qualities to reproduce (positive eugenics), or discouraging people with bad genetic qualities from reproducing (negative eugenics), or by technological means.