The word "dissertation" is commonly misspelled as "decertation." The correct pronunciation of this word is /ˌdɪsərˈteɪʃən/. The error in spelling may stem from mishearing and misinterpreting the pronunciation of the word. It is important to pay attention to the pronunciation and spelling of words in order to effectively communicate and avoid confusion. Students and writers presenting a dissertation should take care to ensure that they are using the correct spelling to convey their message clearly.