版权声明：版权所有为南京道之先生，转载请注明。 https://blog.csdn.net/alphachx/article/details/87698103
如题。
In Europe, Thesis是用来指博士论文，Dissertation则是硕士论文。however, In the US, their definitions are exactly opposite.
by the way, to say "论文答辩", you can use the phrase " to defend your thesis/dissertation".