Thē'sis, n.
n.; pl. THĒ'SĒS. [Lat. thesis, Gr. θέσις, from τιθέναι, to place, set; Fr. thèse, Sp. tesis, It. tesi.]
Sense 1. A position or proposition which a person advances and offers to maintain, or which is actually maintained by argument; a theme; a subject; especially, a subject or proposition for a school or university exercise, or the exercise itself.
Sense 2. Hence, an essay or dissertation written upon a specific or definite theme.
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. Goldsmith.
Sense 3. (Logic.) An affirmation in distinction from a supposition or hypothesis.
Sense 4. An essay presented by a candidate for a diploma or degree, as by a doctor of medicine.
Sense 5. (Mus.) The unaccented or unpercussed part of the measure, which the Greeks expressed by the downward beat.
Sense 6. (Pros.) (a.) The depression of the voice in pronouncing the syllables of a word. (b.) The part of the foot upon which such a depression falls.