Thesis

n. 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.
  3. (Logic) An affirmation, or distinction from a supposition or hypothesis.
  4. (Mus.) The accented part of the measure, expressed by the downward beat; -- the opposite of arsis.
    1. The depression of the voice in pronouncing the syllables of a word.
    2. The part of the foot upon which such a depression falls.