thesis thesis /ˈθiːˌsɪs/

noun

1. () An unproved statement put forward as a premise in an argument  ( thesis )
   an unproved statement put forward as a premise in an argument
   
2. A treatise advancing a new point of view resulting from research; usually a requirement for an advanced academic degree  ( dissertation , thesis )
   a treatise advancing a new point of view resulting from research; usually a requirement for an advanced academic degree
    My dissertation on the effects of social media on mental health was well-received by my professor
   My dissertation on the effects of social media on mental health was well-received by my professor