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Cours de linguistique générale was the title of Ferdinand de Saussure's influential course on linguistics. Delivered at the University of Geneva between 1906 and 1911, it was published posthumously in 1916 and became a foundational text in the field. The course introduced key concepts such as the distinction between langue and parole, the arbitrariness of the sign, and the synchronic and diachronic approaches to language study.