The correct spelling of the word "Dissertation" is often confused with a similar sounding word "Dissentation". However, the correct pronunciation of both words is different. The word Dissertation is pronounced as [ˌdɪs.ərˈteɪ.ʃən], while Dissentation is pronounced as [dɪˌsɛnˈteɪʃən]. The latter refers to the act of expressing disagreement or objection, whereas the former refers to a formal and lengthy academic paper, typically written for a doctoral degree. It is important to remember the difference between these two words and always use the correct spelling in your writing.