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Definition of thesis
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
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
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
14th century, in the meaning defined at sense 3a(1)
Dictionary Entries Near thesis
the sins of the fathers are visited upon the children
thesis novel
Cite this Entry
“Thesis.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/thesis. Accessed 23 Apr. 2024.
Kids Definition
Kids definition of thesis, more from merriam-webster on thesis.
Nglish: Translation of thesis for Spanish Speakers
Britannica English: Translation of thesis for Arabic Speakers
Britannica.com: Encyclopedia article about thesis
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- 1.1 Etymology
- 1.2 Pronunciation
- 1.3.1 Derived terms
- 1.3.2 Related terms
- 1.3.3 Translations
- 1.4 References
- 1.5 Further reading
- 1.6 Anagrams
- 2.1 Etymology
- 2.2 Pronunciation
- 3.1 Etymology
- 3.2 Pronunciation
- 3.3.1 Declension
- 3.3.2 Descendants
- 3.4 References
English [ edit ]
Etymology [ edit ].
From Late Middle English thesis ( “ lowering of the voice ” ) [1] and also borrowed directly from its etymon Latin thesis ( “ proposition, thesis; lowering of the voice ” ) , from Ancient Greek θέσῐς ( thésis , “ arrangement, placement, setting; conclusion, position, thesis; lowering of the voice ” ) , from τῐ́θημῐ ( títhēmi , “ to place, put, set; to put down in writing; to consider as, regard ” ) [2] [3] (ultimately from Proto-Indo-European *dʰeh₁- ( “ to do; to place, put ” ) ) + -σῐς ( -sis , suffix forming abstract nouns or nouns of action, process, or result ) . The English word is a doublet of deed .
Sense 1.1 (“proposition or statement supported by arguments”) is adopted from antithesis . [2] Sense 1.4 (“initial stage of reasoning”) was first used by the German philosopher Johann Gottlieb Fichte (1762–1814), and later applied to the dialectical method of his countryman, the philosopher Georg Wilhelm Friedrich Hegel (1770–1831).
The plural form theses is borrowed from Latin thesēs , from Ancient Greek θέσεις ( théseis ) .
Pronunciation [ edit ]
- ( Received Pronunciation ) IPA ( key ) : /ˈθiːsɪs/ , ( archaic ) /ˈθɛsɪs/
- ( General American ) IPA ( key ) : /ˈθisɪs/
- Rhymes: -iːsɪs
- Hyphenation: the‧sis
- ( Received Pronunciation ) IPA ( key ) : /ˈθiːsiːz/
- ( General American ) IPA ( key ) : /ˈθisiz/
- Rhymes: -iːsiːz
- Hyphenation: the‧ses
Noun [ edit ]
thesis ( plural theses )
- ( rhetoric ) A proposition or statement supported by arguments .
- 1766 , [ Oliver Goldsmith ], “The Conclusion”, in The Vicar of Wakefield: [ … ] , volume II, Salisbury, Wiltshire: [ … ] B. Collins, for F [ rancis ] Newbery , [ … ] , →OCLC ; reprinted London: Elliot Stock , 1885 , →OCLC , pages 218–219 : 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, in order to prepare them.
- ( mathematics , computer science ) A conjecture , especially one too vague to be formally stated or verified but useful as a working convention.
- ( logic ) An affirmation , or distinction from a supposition or hypothesis .
- ( philosophy ) In the dialectical method of Georg Wilhelm Friedrich Hegel : the initial stage of reasoning where a formal statement of a point is developed ; this is followed by antithesis and synthesis .
- ( music , prosody , originally ) The action of lowering the hand or bringing down the foot when indicating a rhythm ; hence, an accented part of a measure of music or verse indicated by this action; an ictus , a stress . Antonym: arsis
- ( music , prosody , with a reversal of meaning ) A depression of the voice when pronouncing a syllables of a word ; hence, the unstressed part of the metrical foot of a verse upon which such a depression falls , or an unaccented musical note .
Derived terms [ edit ]
- all but thesis
- bachelor's thesis
- Church-Turing thesis
- conflict thesis
- doctoral thesis
- graduate thesis
- Habakkuk thesis
- master's thesis
- Merton thesis
- private language thesis
- thesis defense
- thesis film
- thesis statement
Related terms [ edit ]
Translations [ edit ], references [ edit ].
- ^ “ thē̆sis, n. ”, in MED Online , Ann Arbor, Mich.: University of Michigan , 2007 .
- ^ “ thesis, n. ”, in Lexico , Dictionary.com ; Oxford University Press , 2019–2022 .
Further reading [ edit ]
- “ thesis ”, in The Century Dictionary [ … ] , New York, N.Y.: The Century Co. , 1911 , →OCLC .
- “ thesis ”, in Webster’s Revised Unabridged Dictionary , Springfield, Mass.: G. & C. Merriam , 1913 , →OCLC .
Anagrams [ edit ]
- Heists , Sethis , heists , shiest , shites , sithes , thises
Dutch [ edit ]
From Latin thesis , from Ancient Greek θέσις ( thésis , “ a proposition, a statement, a thing laid down, thesis in rhetoric, thesis in prosody ” ) .
thesis f ( plural theses or thesissen , diminutive thesisje n )
- Dated form of these . Synonyms: dissertatie , proefschrift , scriptie
Latin [ edit ]
From Ancient Greek θέσις ( thésis , “ a proposition, a statement, a thing laid down, thesis in rhetoric, thesis in prosody ” ) .
- ( Classical ) IPA ( key ) : /ˈtʰe.sis/ , [ˈt̪ʰɛs̠ɪs̠]
- ( modern Italianate Ecclesiastical ) IPA ( key ) : /ˈte.sis/ , [ˈt̪ɛːs̬is]
thesis f ( genitive thesis ) ; third declension
Declension [ edit ]
Descendants [ edit ].
- → Dutch: thesis
- → Armenian: թեզ ( tʻez )
- → Dutch: these
- → Persian: تز ( tez )
- → Romanian: teză
- → Turkish: tez
- Galician: tese
- Italian: tesi
- English: thesis
- Portuguese: tese
- Spanish: tesis
- “ thesis ”, in Charlton T. Lewis and Charles Short ( 1879 ) A Latin Dictionary , Oxford: Clarendon Press
- thesis in Gaffiot, Félix ( 1934 ) Dictionnaire illustré latin-français , Hachette.
- English terms derived from Proto-Indo-European
- English terms derived from the Proto-Indo-European root *dʰeh₁-
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Definition of thesis noun from the Oxford Advanced Learner's Dictionary
- Students must submit a thesis on an agreed subject within four years.
- He presented this thesis for his PhD.
- a thesis for a master's degree
- He's doing a doctoral thesis on the early works of Shostakovich.
- Many departments require their students to do a thesis defense.
- She completed an MSc by thesis.
- her thesis adviser at MIT
- in a/the thesis
- thesis about
Join our community to access the latest language learning and assessment tips from Oxford University Press!
- The basic thesis of the book is fairly simple.
- These latest findings support the thesis that sexuality is determined by nature rather than choice.
- formulate/advance a theory/hypothesis
- build/construct/create/develop a simple/theoretical/mathematical model
- develop/establish/provide/use a theoretical/conceptual framework
- advance/argue/develop the thesis that…
- explore an idea/a concept/a hypothesis
- make a prediction/an inference
- base a prediction/your calculations on something
- investigate/evaluate/accept/challenge/reject a theory/hypothesis/model
- design an experiment/a questionnaire/a study/a test
- do research/an experiment/an analysis
- make observations/measurements/calculations
- carry out/conduct/perform an experiment/a test/a longitudinal study/observations/clinical trials
- run an experiment/a simulation/clinical trials
- repeat an experiment/a test/an analysis
- replicate a study/the results/the findings
- observe/study/examine/investigate/assess a pattern/a process/a behaviour
- fund/support the research/project/study
- seek/provide/get/secure funding for research
- collect/gather/extract data/information
- yield data/evidence/similar findings/the same results
- analyse/examine the data/soil samples/a specimen
- consider/compare/interpret the results/findings
- fit the data/model
- confirm/support/verify a prediction/a hypothesis/the results/the findings
- prove a conjecture/hypothesis/theorem
- draw/make/reach the same conclusions
- read/review the records/literature
- describe/report an experiment/a study
- present/publish/summarize the results/findings
- present/publish/read/review/cite a paper in a scientific journal
- The results of the experiment support his central thesis.
- Most people rejected this thesis at the time because it presumed evolution rather than creation.
- fundamental
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Plural of Thesis
The Quick Answer
The Plural of Thesis
Table of Contents
Are You Good at Plurals?
The standard rules for forming the plurals, why is there confusion over the plural of thesis.
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English Teacher Site
Whats the Plural of Thesis: Understanding Singular and Plural Forms
- The plural of “thesis” adheres to the Greek-rooted pattern, changing the singular -is to a plural -es.
- Accurate use of “thesis” and “theses” reflects scholarly precision in both written and oral communication.
- Awareness of correct pluralization extends to other similar nouns ending in -sis, emphasizing the importance of understanding language origins.
It is crucial to use the word correctly in both singular and plural contexts to maintain the integrity of written and spoken communication. In the realm of academics, precision in language reflects the rigor of one’s research and argumentation. As such, understanding the transformation from “thesis” to its plural counterpart is more than a trivial detail; it reflects a deeper appreciation for the structure and history of the English language.
What’s the Plural of Thesis?
The proper plural of thesis is “theses.” This transformation is part of a broader pattern in the English language where certain nouns change their ending to reflect a plural state.
Below, a comparison is made to illustrate the standard singular to plural transformation for nouns ending in -is:
Key Points about the pluralization of “thesis”:
- The plural follows a specific rule of changing the ‘-is’ ending to ‘-es’.
- This pattern is consistent with other Greek-derived words.
- The pronunciation changes with the plural form, ending in “-eez.”
To clarify usage, consider these examples:
- Singular: The student’s thesis was commended for its clarity.
- Plural: The professor read all the submitted theses before the conference.
Singular Form of Thesis
The singular form of ‘thesis’ is of notable interest due to its origins and distinct pluralization.
Origination and Definition:
- Etymology : Derived from the ancient Greek word τίθημι (tithēmi), which means “to put” or “to place.”
- Meaning : It is a statement or theory put forward to be maintained or proved.
Usage in Academia:
- A significant piece of writing prepared by a student to obtain a university degree or diploma.
- Often involves original research and substantiates a particular view or argument.
Table 1: Notable Features of ‘Thesis’
Table 2: Contextual Examples
Definition of Thesis
A thesis is a substantial piece of scholarly writing that is typically required to obtain a master’s or doctoral degree. It represents the author’s research and findings in their chosen field of study. A thesis serves as evidence that the student has acquired the knowledge necessary to be considered a scholar in the field. Here, two key aspects of a thesis will be described through tables:
Purpose and Composition of a Thesis:
Characteristics of a Thesis:
- Focused : It should have a clear, concise premise or central argument.
- Researched : Employs rigorous methodologies to gather and analyze data.
- Structured : Contains defined sections that present information logically.
- Cited : Includes proper citations of sources that support or contrast the thesis.
- Reviewed : Undergoes scrutiny by academic peers or supervisors.
Other Irregular Plural Nouns Ending in -sis/ses
Below you will find two tables categorized by common and less common irregular plurals that follow this pattern.
Common Irregular Plurals:
This pattern is often observed with words that have Greek origins.
Less Common Irregular Plurals:
It is important to recognize these forms to maintain grammatical accuracy in writing and speech. Below is a list of examples used in sentences:
- When multiple scientific hypotheses are tested, the results can lead to important discoveries.
- During the editing process, Jane had to review all the parentheses to ensure clarity in her writing.
- Geographers study multiple oases in the desert to understand these unique ecosystems.
- His thesis on renewable energy was well-received, and many theses on the subject reference his work.
Examples of Thesis (Singular) in Sentences
Here are examples that demonstrate its usage in various sentences.
In Academic Context
In everyday discourse.
Informal setting : During the debate, his thesis was that space exploration is no longer just a dream but a necessity.
- Discussing beliefs : Her thesis is that all public spaces should offer free Wi-Fi.
- Opinion : They argued the thesis that high taxes discourage spending.
Examples of Theses (Plural) in Sentences
Here are some examples of how “theses” can be used in sentences:
Education Setting : Graduate students often struggle to find unique topics for their theses as most ideas have been extensively explored.
- Evaluating the structure and arguments of different theses can help one build a stronger dissertation.
Origin of the Word Thesis
The term thesis originates from the ancient Greek word θέσις (thésis), which means “a proposition” . Historically, this term has played a crucial role in both rhetorical and academic contexts. It denotes a statement that a writer intends to support and prove. In academic circles, thesis often refers to a document that presents the author’s research and findings and is submitted in support of candidature for a degree or professional qualification.
Etymological Background
The journey of the word from its Greek roots to the modern English language reflects the changing dynamics of educational and scholarly practices over the centuries.
As a carryover from Greek to Latin, the word made its way into English, maintaining its original Greek plural form:
Usage in Academia
In academia, the word has been used since the late Middle Ages to denote a scholarly work written by students aiming to obtain a university degree. Over time, the use of thesis expanded from merely referring to a proposition to a lengthy document providing evidence of comprehensive research.
Historical Evolution:
- Middle Ages : Referred to propositions for a degree.
- Renaissance : Emphasized individual research.
- Modern Usage : Extensive research documents for higher education degrees.
Areas of Impact:
- Rhetoric : Considered as a premise to be argued.
- Academic Research : Reflects comprehensive study in a field.
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thesis noun
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What does the noun thesis mean?
There are eight meanings listed in OED's entry for the noun thesis . See ‘Meaning & use’ for definitions, usage, and quotation evidence.
thesis has developed meanings and uses in subjects including
Entry status
OED is undergoing a continuous programme of revision to modernize and improve definitions. This entry has not yet been fully revised.
How common is the noun thesis ?
How is the noun thesis pronounced, british english, u.s. english, where does the noun thesis come from.
Earliest known use
Middle English
The earliest known use of the noun thesis is in the Middle English period (1150—1500).
OED's earliest evidence for thesis is from before 1398, in a translation by John Trevisa, translator.
thesis is a borrowing from Greek.
Etymons: Greek θέσις .
Nearby entries
- thesaurus, n. 1823–
- thesaury, n. a1639–1708
- these, n. a1600–48
- these, pron. & adj. Old English–
- Thesean, adj. 1815–
- Theseid, n. 1725–
- Theseium, n. 1819–
- these-like, adj. 1644–
- thesial, adj. 1654
- thesicle, n. 1863–
- thesis, n. a1398–
- thesis-novel, n. 1934–
- thesis-play, n. 1902–
- thesmophilist, n. 1644–
- Thesmophorian, adj. 1891–
- Thesmophoric, adj. 1788–
- thesmothete, n. 1603–
- thesocyte, n. 1887–
- thesp, n. 1962–
- Thespian, adj. & n. 1675–
- Thespianism, n. 1914–
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Meaning & use
Pronunciation, compounds & derived words, entry history for thesis, n..
thesis, n. was first published in 1912; not yet revised.
thesis, n. was last modified in March 2024.
Revision of the OED is a long-term project. Entries in oed.com which have not been revised may include:
- corrections and revisions to definitions, pronunciation, etymology, headwords, variant spellings, quotations, and dates;
- new senses, phrases, and quotations which have been added in subsequent print and online updates.
Revisions and additions of this kind were last incorporated into thesis, n. in March 2024.
Earlier versions of this entry were published in:
OED First Edition (1912)
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Citation details
Factsheet for thesis, n., browse entry.
Grammarflex
What’s the Plural of Thesis? (Thesises? Theses?)
- November 13, 2022
What’s the plural of “thesis”?
Thesis , (and its plural theses ) is an example of one of the many common English words that has roots elsewhere. In this case, thesis is a word that has roots all the way back to Ancient Greek. Like other similarly structured words: diagnosis , synthesis , analysis , oasis , crisis , nemesis and the like, thesis is by no means the only frequently used Greek word that’s made it to Modern English.
What’s the singular of thesis?
Thesis is a singular noun and refers to one thing (or one thesis ).
What’s a thesis?
Merriam-Webster defines the noun thesis (plural theses ) as follows, “a dissertation embodying results of original research and especially substantiating a specific view especially : one written by a candidate for an academic degree.”
Nouns that end in -sis/ses
Thesis is an irregular plural noun that does not end in the typical -s / -es that regular plural noun forms take. This is so despite that theses plural does in fact end in the conventional -s/-es suffix. Why is it still considered irregular; then, given that it follows the regular plural form? Notice the following regular plural noun forms:
Thesis / theses operates differently. With these Greek words, the -ses does not simply add onto the end of the singular form of the noun; instead, -ses replaces the singular noun’s suffixes, and effectively changes the entire spelling of the word (and arguably the word itself.)
Examples of “thesis” (singular) in sentences
His master thesis was on modal neural networks.
She wrote her thesis on Renaissance Nativity scenes.
We disagreed with the basic thesis of the report.
I’ve made a first draft of my thesis .
The student’s experiments helped her formulate a thesis to share with her professor and classmates.
Examples of “theses” (plural) in sentences
It must not be assumed that Luther’s ninety-five theses produced any considerable direct results.
The collection of theses are ready for publication.
Twenty years after Savonarola’s death Martin Luther made public his theses against indulgences.
Theses are generally examined by two or more specialists.
Theses is the plural form of the singular noun thesis.
Origin of the word “thesis”
Thesis / theses are of Greek origin.
Read about other irregular nouns
- What’s the plural of bison?
- What’s the plural of moose?
- What’s the plural of sheep?
- What’s the plural of ox?
- What’s the plural of cactus?
- What’s the plural of crisis?
- What’s the plural of hypothesis?
Read about other topics in grammar
- What’re personal pronouns?
- What’s the difference between they’re, their, and there?
- Whose vs who’s?
- Merriam-Webster, thesis/theses.
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Definition of 'thesis'
Video: pronunciation of thesis
thesis in British English
Thesis in american english, examples of 'thesis' in a sentence thesis, cobuild collocations thesis, trends of thesis.
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In other languages thesis
- American English : thesis / ˈθisɪs /
- Brazilian Portuguese : tese
- Chinese : 论点
- European Spanish : tesis
- French : thèse
- German : These
- Italian : tesi
- Japanese : 主張
- Korean : 논지
- European Portuguese : tese
- Latin American Spanish : tesis
- Thai : ข้อสมมุติ, ข้อวินิจฉัย
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Related terms of thesis
- academic thesis
- central thesis
- doctoral thesis
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Meaning of thesis in English
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- I wrote my thesis on literacy strategies for boys .
- Her main thesis is that children need a lot of verbal stimulation .
- boilerplate
- composition
- dissertation
- essay question
- peer review
You can also find related words, phrases, and synonyms in the topics:
thesis | American Dictionary
Examples of thesis, collocations with thesis.
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Word of the Day
the fact that people or animals do what they are told to do
Binding, nailing, and gluing: talking about fastening things together
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COMMENTS
The meaning of THESIS is a dissertation embodying results of original research and especially substantiating a specific view; especially : one written by a candidate for an academic degree. How to use thesis in a sentence.
THESIS pronunciation. How to say thesis. Listen to the audio pronunciation in English. Learn more.
THESES definition: 1. plural of thesis 2. plural of thesis . Learn more.
Thesis becomes theses in plural form for two reasons: 1) The word thesis has a Greek root, and theses is how it is pluralized in that original language. 2) There are many English words ending with -is that take on -es endings when pluralized: e.g., crisis becomes crises. The pluralization isn't all that unique.
How to pronounce THESES. How to say theses. Listen to the audio pronunciation in the Cambridge English Dictionary. Learn more.
Noun [ edit] thesis (plural theses) Senses relating to logic, rhetoric, etc. ( rhetoric) A proposition or statement supported by arguments. (by extension) A lengthy essay written to establish the validity of a thesis (sense 1.1), especially one submitted in order to complete the requirements for a non- doctoral degree in the US and a doctoral ...
thesis (that…) a statement or an opinion that is discussed in a logical way and presented with evidence in order to prove that it is true. The basic thesis of the book is fairly simple. These latest findings support the thesis that sexuality is determined by nature rather than choice.
"Theses" is the only way to make the noun "thesis" plural. Confusion arises because some mistakenly believe that all nouns ending in "s" should form a plural that adds "es" to the end of the word. When a noun ends with "is," you need to replace the "is" with an "es" to form the plural. This is because its plural form derives from Greek.
This video shows you How to Pronounce Thesis (antithesis), pronunciation guide.Learn how to say PROBLEMATIC WORDS better: https://www.youtube.com/watch?v=dyn...
The plural of "thesis" adheres to the Greek-rooted pattern, ... Definition of Thesis. A thesis is a substantial piece of scholarly writing that is typically required to obtain a master's or doctoral degree. It represents the author's research and findings in their chosen field of study. A thesis serves as evidence that the student has ...
Definition and Plural of Thesis. When writing a research paper or dissertation, the central argument or main point is known as a thesis. A thesis is a statement or proposition that is put forward as a premise to be maintained or proved. It is a crucial element of academic writing and is often required for a degree or certification.
corrections and revisions to definitions, pronunciation, etymology, headwords, variant spellings, quotations, and dates; new senses, phrases, and quotations which have been added in subsequent print and online updates. Revisions and additions of this kind were last incorporated into thesis, n. in March 2024.
THESIS meaning: 1. a long piece of writing on a particular subject, especially one that is done for a higher…. Learn more.
plural theses / ˈθiːˌsiːz/. Britannica Dictionary definition of THESIS. [count] 1. : a long piece of writing on a particular subject that is done to earn a degree at a university. She wrote her thesis on Renaissance Nativity scenes. a master's/doctoral thesis on the effects of global warming. 2. formal : a statement that someone wants to ...
thesis in American English. (ˈθisɪs) noun Word forms: plural -ses (-siz) 1. a proposition stated or put forward for consideration, esp. one to be discussed and proved or to be maintained against objections. He vigorously defended his thesis on the causes of war. 2. a subject for a composition or essay. 3.
What's the plural of "thesis"? Thesis, (and its plural theses) is an example of one of the many common English words that has roots elsewhere. In this case, thesis is a word that has roots all the way back to Ancient Greek. Like other similarly structured words: diagnosis, synthesis, analysis, oasis, crisis, nemesis and the like, thesis is by no means the only frequently used Greek word ...
THESES meaning: 1. plural of thesis 2. plural of thesis . Learn more.
Thesis definition: A proposition that is maintained by argument. Dictionary ... Plural: theses. Origin of Thesis Latin from Greek from tithenai to put dhē-in Indo-European roots Senses 5 and 6, Middle English from Late Latin lowering of the voice from Greek downbeat.
7 meanings: 1. a dissertation resulting from original research, esp when submitted by a candidate for a degree or diploma 2. a.... Click for more definitions.
Contact tutor. 3 years ago. The plural of thesis is theses. The answer is: 👍. Helpful ( 0) 💡. Interesting ( 0) 😄.
THESIS definition: 1. a long piece of writing on a particular subject, especially one that is done for a higher…. Learn more.
Thesis Plural Pronunciation. I ordered a paper with a 3-day deadline. They delivered it prior to the agreed time. Offered free alterations and asked if I want them to fix something. However, everything looked perfect to me. Level: College, University, High School, Master's, PHD, Undergraduate, Regular writer. Submit.