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English definition of “thesis”

thesis

noun [C] uk   /ˈθiː.sɪs/ (plural theses   /ˈθiː.siːz/   ) us  
B2 a long piece of writing on a particular subject, especially one that is done for a higher college or university degree: a doctoral thesis (= for a PhD)Papers and compositions C2 formal the main idea, opinion, or theory of a person, group, piece of writing, or speech: Their main thesis was that war was inevitable.Topics and areas of interest
(Definition of thesis from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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