segregation
seg.re.ga.tion \.seg-ri-'ga--sh*n\ n 1: the act or process of segregating :
the state of being segregated 2a: the separation or isolation of a race,
class, or ethnic group by enforc ed or voluntary residence in a restricted
area, by barriers to social intercourse, by separate educational
facilities, or by other discriminatory means 2b: the separation for special
treatment or observation of individuals or i tems from a larger group {~ of
gifted children into accelerated classes ~ of incorrigibles at a prison}