noun Download 🔗Share A formal exposition of a subject, especially a research paper that students write in order to complete the requirements for a doctoral degree; a thesis. Examples : "Maria spent two years researching and writing her dissertation on the effects of climate change on local bird populations. " education writing achievement literature science Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share A lengthy lecture on a subject; a treatise; a discourse; a sermon. Examples : "The professor launched into a lengthy dissertation on the history of economics during the lecture, leaving many students confused. " education writing literature Chat with AIVocabulary GamePractice Reading