(verb)
to divide a society and separate/isolate people from it based on their race, religion, or sex;
e.g. The country continued to segregate its citizens based on their race for many years.
(verb)
in genetics, to be separated during the process of meiosis (a type of cell division) and to then be independently transmitted to the offspring by separate gametes, used to describe the behavior of pairs of alleles of genes;
e.g. These alleles segregate during the next stage of division.
(noun)
something or someone that has been divided or isolated in some way;
e.g. He belongs to the segregate group that was made to wait.