A formal exposition of a subject, especially a research paper that students write in order to complete the requirements for a doctoral degree in the US and a non-doctoral degree in the UK; a thesis.
A lengthy lecture on a subject; a treatise; a discourse; a sermon.
A collection of essays, articles or papers on a particular subject by a number of contributors.
A drinking party in Ancient Greece, especially one with intellectual discussion.
A conference or other meeting for discussion of a topic, especially one in which the participants make presentations.