from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A lengthy, formal treatise, especially one written by a candidate for the doctoral degree at a university; a thesis.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. 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.
- n. A lengthy lecture on a subject; a treatise; a discourse; a sermon.
from the GNU version of the Collaborative International Dictionary of English
- n. A formal or elaborate argumentative discourse, oral or written; a disquisition; an essay; a discussion.
from The Century Dictionary and Cyclopedia
- n. A set or formal discourse.
- n. A written essay, treatise, or disquisition: as, Newton's dissertations on the prophecies.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a treatise advancing a new point of view resulting from research; usually a requirement for an advanced academic degree
Latin dissertationem, from dissertare. (Wiktionary)