Thesis /(?)/

pl. Theses

1. A position or proposition which a person advances and offers to maintain, or which is actually maintained by argument.
2. Hence, an essay or dissertation written upon specific or definite theme; especially, an essay presented by a candidate for a diploma or degree.

   I told them of the grave, becoming, and sublime deportment they should assume upon this mystical occasion, and read them two homilies and a thesis of my own composing, to prepare them.

3. An affirmation, or distinction from a supposition or hypothesis. (Logic)
4. The accented part of the measure, expressed by the downward beat; -- the opposite of arsis. (Mus.)
5. The depression of the voice in pronouncing the syllables of a word. (Pros.)