thesis

noun

the·​sis ˈthē-səs How to pronounce thesis (audio)
 British especially for sense 3  ˈthe-sis
plural theses ˈthē-ˌsēz How to pronounce thesis (audio)
1
: a dissertation embodying results of original research and especially substantiating a specific view
especially : one written by a candidate for an academic degree
2
a
: a proposition to be proved or one advanced without proof : hypothesis
b
: a position or proposition that a person (such as a candidate for scholastic honors) advances and offers to maintain by argument
3
a(1)
: the unstressed part of a poetic foot especially in accentual verse
(2)
: the longer part of a poetic foot especially in quantitative verse
b
: the accented part of a musical measure : downbeat compare arsis
4
: the first and least adequate stage of dialectic compare synthesis

Did you know?

In high school, college, or graduate school, students often have to write a thesis on a topic in their major field of study. In many fields, a final thesis is the biggest challenge involved in getting a master's degree, and the same is true for students studying for a Ph.D. (a Ph.D. thesis is often called a dissertation). But a thesis may also be an idea; so in the course of the paper the student may put forth several theses (notice the plural form) and attempt to prove them.

Examples of thesis in a Sentence

She wrote her thesis on Renaissance Nativity scenes. a master's thesis on the effects of global warming New evidence supports his thesis. We disagreed with the basic thesis of the report. The book's central thesis is that propaganda influences the masses in important ways.
Recent Examples on the Web Since graduating with her master's in religion and public life from Harvard Divinity School in 2022, Rogers — now a fellow — has been working to turn her thesis into a book. Jeff Nelson, Peoplemag, 12 Apr. 2024 At the National University of La Plata in neighboring Argentina, Dr. Almada received a doctorate in education in 1974 and wrote a thesis arguing that Paraguay’s education system supported the elite’s dominance and reinforced economic inequities. Brian Murphy, Washington Post, 5 Apr. 2024 This experience inspired Tuchman to write her senior thesis on how education is a tool for social justice. Geri Stengel, Forbes, 27 Mar. 2024 For her undergraduate thesis, Rio-Glick choreographed six dance pieces. Isabella Cueto, STAT, 8 Mar. 2024 The thesis was often stated loud and clear: The cars of the near future will be all batteries, sensors, and apps, and in that sense will merely be phones on wheels. Samanth Subramanian, Quartz, 2 Mar. 2024 With graduation fast approaching, Rudy hasn’t started his marketing thesis or begun considering career options. Lovia Gyarkye, The Hollywood Reporter, 4 Apr. 2024 At least since René Descartes declared dogs to be no more feeling than machines, and doubled down on his thesis by nailing and burning some of the unlucky automatons alive, people objecting to the misuse of animals have mostly inhabited the losing side. Christian Schneider, National Review, 28 Mar. 2024 Black Skin, White Masks, his first book, grew out of his original, but rejected, idea for a doctoral thesis. Gal Beckerman, The Atlantic, 28 Mar. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'thesis.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

in sense 3, Middle English, lowering of the voice, from Late Latin & Greek; Late Latin, from Greek, downbeat, more important part of a foot, literally, act of laying down; in other senses, Latin, from Greek, literally, act of laying down, from tithenai to put, lay down — more at do

First Known Use

14th century, in the meaning defined at sense 3a(1)

Time Traveler
The first known use of thesis was in the 14th century

Cite this Entry

“Thesis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thesis. Accessed 20 Apr. 2024.

Kids Definition

thesis

noun
the·​sis ˈthē-səs How to pronounce thesis (audio)
plural theses ˈthē-ˌsēz How to pronounce thesis (audio)
1
: a statement put forth for discussion or proof : hypothesis
2
: a long essay presenting the results of original research

More from Merriam-Webster on thesis

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