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English definition of “dissertation”

dissertation

noun [C]     /ˌdɪs.əˈteɪ.ʃən/ US  /-ɚ-/
C1 a long piece of writing on a particular subject, especially one that is done as a part of a course at college or university: Ann did her dissertation on Baudelaire.Papers and compositions
(Definition of dissertation noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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