/ ˈdɪsəplɪnəri; ˌdɪsəˈplɪnəri; NAmE ˈdɪsəpləneri/ adjective
connected with the punishment of people who break rules :
a disciplinary hearing (= to decide if sb has done sth wrong)
The company will be taking disciplinary action against him.
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WORD ORIGIN
late 15th cent. (originally with reference to ecclesiastical order): from medieval Latin disciplinarius , from Latin disciplina , from discipulus learner, from discere learn.