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general::
noun ADJ. research | doctoral, Master's, undergraduate | MSc, PhD, etc. | 15,000-word, etc. VERB + DISSERTATION do, prepare, write Students can either do a dissertation or take part in a practical project. | complete, finish | hand in, present, submit Candidates are required to present a dissertation of between 8,000 and 12,000 words. PREP. ~ on He wrote his Master's dissertation on rats.
Oxford Collocations Dictionary