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n.
a system of rules of conduct or method of practice; "he quickly learned the discipline of prison routine"; "for such a plan to work requires discipline";
n.
a branch of knowledge; "in what discipline is his doctorate?"; "teachers should be well trained in their subject"; "anthropology is the study of human beings"
n.
the act of making some area of land or water more profitable or productive or useful; "the development of Alaskan resources"; "the exploitation of copper deposits"
n.
an acting technique introduced by Stanislavsky in which the actor recalls emotions or reactions from his or her own life and uses them to identify with the character being portrayed