Meaning of “thesis” - Learner’s Dictionary


noun [ C ] uk us /ˈθiːsɪs/ (plural theses /ˈθiːsiːz/)

B2 a long piece of writing that you do as part of an advanced university course:

a master's/PhD thesis
IDEA formal

a theory that is suggested and can then be argued with or agreed with:

That is the central thesis of the book.

(Definition of “thesis” from the Cambridge Learner’s Dictionary © Cambridge University Press)