thesis
Pronunciation: /ˈθiːsɪs/
noun ( plural theses /-siːz/)
- 1a statement or theory that is put forward as a premise to be maintained or proved: his central thesis is that psychological life is not part of the material world
- (in Hegelian philosophy) a proposition forming the first stage in the process of dialectical reasoning. Compare with antithesis, synthesis.
- 2a long essay or dissertation involving personal research, written by a candidate for a university degree: a doctoral thesis
- 3 /ˈθiːsɪs, ˈθɛsɪs/ Prosody an unstressed syllable or part of a metrical foot in Greek or Latin verse. Often contrasted with arsis.
Origin:
late Middle English (in thesis (sense 3)): via late Latin from Greek, literally 'placing, a proposition', from the root of tithenai 'to place'
Spelling rule
Make the plural by changing the -is ending to -es: