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Definition of thesis

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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 14 Jun. 2024.

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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

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

  • ( Received Pronunciation ) IPA ( key ) : /ˈθiːsɪs/ , ( archaic ) /ˈθɛsɪs/
Audio ( ): ( )
  • ( 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

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

  • 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

Translations.

  (tʻez)   ,   (tézis),   (palažénnje),   (téza)     (téza),     (tézis)     (leon dim ), (leon tai )   (lùndiǎn),   (lùntí)       ,             ,             (tezisi)       (thésis)       ,       (tēze),   (ろんだい, rondai),   (しゅちょう, shuchō),   (ていりつ, teiritsu) (teje), (nonje), (ronje) (North Korea)     (teza)                 (tɛ́zis),     (položénije)                   ,   ,   ,   ,     (téza),   (tézys),   (polóžennja)  
  (ʔuṭrūḥa)   (atenaxosutʻyun),   (disertacʻia), (diplomayin ašxatankʻ)     (dysjertácyja),   (dysertácyja),   (dyplómnaja rabóta)     (disertácija)     ,     (leon man )   (lùnwén)     ,       ,     ,       ,   ;   ;           ,   (diserṭacia)     ,     ,     ,     ,     ,     (only a doctoral thesis) (mahāśodh nibandh)     (téza)   ,   (postgraduate),           (ろんぶん, ronbun) (dissertasiä), (diplomdyq jūmys)   (nɨkkheepaʼbɑt)   (nonmun),   (ronmun) (North Korea) (dissertatsiya)   (wi tha nyā ni phon)         (disertacija)   or     , (pâyân-nâme),       ,           ,         (dissertácija),   (diplómnaja rabóta)         ,     ,         ,     (dissertatsiya)   (wít-tá-yaa-ní-pon),   (bpà-rin-yaa-ní-pon),   (ní-pon)   , ,   (dysertácija),   (dyplómna robóta)   , ,  
  (thésis)  
  • ^ “ 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

  • “ 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 .
  • Heists , Sethis , heists , shiest , shites , sithes , thises

From Latin thesis , from Ancient Greek θέσις ( thésis , “ a proposition, a statement, a thing laid down, thesis in rhetoric, thesis in prosody ” ) .

Audio: ( )

thesis   f ( plural theses or thesissen , diminutive thesisje   n )

  • Dated form of these . Synonyms: dissertatie , proefschrift , scriptie

From Ancient Greek θέσις ( thésis , “ a proposition, a statement, a thing laid down, thesis in rhetoric, thesis in prosody ” ) .

  • ( Classical Latin ) IPA ( key ) : /ˈtʰe.sis/ , [ˈt̪ʰɛs̠ɪs̠]
  • ( modern Italianate Ecclesiastical ) IPA ( key ) : /ˈte.sis/ , [ˈt̪ɛːs̬is]

thesis   f ( genitive thesis ) ; third declension

Case Singular Plural

Descendants

  • → 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.

thesis definition root word

  • English terms derived from Proto-Indo-European
  • English terms derived from the Proto-Indo-European root *dʰeh₁-
  • English terms inherited from Middle English
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Dictionary definition of thesis

A statement or theory that is put forward as a premise to be maintained or proved. "The thesis was published in an academic journal and received widespread recognition."

Detailed meaning of thesis

The thesis is typically a central idea or argument that is developed and presented in a written work, such as a dissertation or research paper. In higher education, a thesis is often a requirement for a graduate degree, such as a Master's or a PhD. The thesis is usually written under the supervision of a thesis advisor or mentor, and it presents original research or an original interpretation of existing research on a specific topic. The main purpose of a thesis is to contribute new knowledge and understanding to the field of study. It must be based on a rigorous research, the results must be presented in a logical and coherent manner and it must be written in a scholarly manner. Additionally, the thesis should demonstrate the student's ability to conduct independent research, to critically evaluate the existing literature, and to communicate their ideas effectively.

Example sentences containing thesis

1. Her thesis on renewable energy proposed innovative solutions for sustainability. 2. The professor praised the clarity of his student's thesis on social inequality. 3. The thesis of his argument was that technology enhances human communication. 4. The thesis of the book challenged conventional wisdom on economic policy. 5. Grad students often spend years researching and writing their theses. 6. The thesis behind the research project aimed to address pressing health issues.

History and etymology of thesis

The noun ' thesis ' has its etymological roots in ancient Greek. It is derived from the Greek word 'θέσις' (thésis), which means 'a setting down' or 'a position.' In the context of ancient Greece, ' thesis ' was used to refer to a proposition or statement that was put forward as the basis of an argument or discussion. It represented a foundational idea or premise that was to be maintained or proved through reasoning and evidence. As the term entered the English language, it retained this fundamental sense and is now commonly used to describe a statement or theory that serves as the central point of an argument or research project. It embodies the concept of a position or assertion that is presented for examination and verification. Therefore, the etymology of ' thesis ' underscores its use as a noun to denote a statement or theory set forth as a premise to be upheld or substantiated.

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Further usage examples of thesis

1. She defended her thesis before a panel of expert examiners. 2. The conference featured presentations on a wide range of academic theses. 3. His groundbreaking thesis reshaped the field of quantum physics. 4. The thesis statement should encapsulate the main argument of your essay. 5. The thesis explored the intersection of art, culture, and identity in society. 6. The professor praised the student's thesis for its originality and depth. 7. His thesis explored the intersection of psychology and literature. 8. The defense of her thesis was a nerve-wracking but rewarding experience. 9. The thesis statement succinctly summarized the main argument of the paper. 10. The committee members engaged in a lively debate about the merits of the thesis . 11. The thesis proposed a new framework for understanding economic inequality. 12. After hours of editing, her thesis was finally ready for submission. 13. The library had an extensive collection of theses from various academic fields. 14. He was awarded a scholarship for his outstanding thesis on urban planning. 15. The thesis challenged existing theories and presented a fresh perspective. 16. The thesis project required extensive fieldwork and data analysis. 17. Her thesis was published in a reputable journal, gaining widespread recognition. 18. The thesis defense was attended by faculty members, peers, and family. 19. The thesis examined the historical context of the Renaissance art movement. 20. The graduate student presented her thesis findings at an international conference. 21. The thesis highlighted the need for further research in the field of genetics. 22. The thesis concluded with a call to action for policy changes in healthcare. 23. The advisor provided valuable guidance throughout the thesis writing process. 24. The thesis was a culmination of years of research and academic dedication.

Quiz categories containing thesis

'thesis' is one of the flashcards in the 'Advancement and Improvement' category

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'thesis' is one of the flashcards in the 'Analytical and Interpretive' category

idea,proposal,subject

eb68db_25c2c7b47f1e4d05beafaf715574acce.mp3

proposition, fact, certainty, proof

https://static.wixstatic.com/media/eb68db_c76b20eee4f544739692acee8c95f51e~mv2.jpg, https://static.wixstatic.com/media/eb68db_14656208e4464bb1a273d7ac7b8c2c94~mv2.jpg, https://static.wixstatic.com/media/eb68db_c3952e52756542aa8faaaa2b25f9be00~mv2.jpg, https://static.wixstatic.com/media/eb68db_d757bc63d7994d5a85f0a9fb1a72ce57~mv2.jpg, https://static.wixstatic.com/media/eb68db_2cfea7e709504d5c8f6e4f13a02e7288~mv2.jpg, https://static.wixstatic.com/media/eb68db_8d472ca04c55431b968d52a6a249030a~mv2.jpg

argument,assertion,hypothesis,postulate,proposition,supposition

Advancement and Improvement, Analytical and Interpretive, Nuance and Precision, Resilience and Resolve, Endeavor and Pursuit, Education and Mastery

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thesis noun

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What does the noun thesis mean?

There are seven 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 December 2023.

Revision of the OED is a long-term project. Entries in oed.com which have not been revised may include:

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  • 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 December 2023.

Earlier versions of this entry were published in:

OED First Edition (1912)

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Other forms: theses

A thesis is the most important or foundational idea of an argument. If the thesis of your paper is that chocolate ice cream is better than vanilla, you'll need to back that up with plenty of sundae-based research.

The noun thesis has more than one important sense to it. One definition of thesis is that it is the most important or foundational idea of an argument, presentation, or piece of writing. But it can also mean a large work of art, criticism, or scientific research that represents original research and is generally the final requirement for an academic degree.

  • noun an unproved statement put forward as a premise in an argument see more see less type of: assumption , premise , premiss a statement that is assumed to be true and from which a conclusion can be drawn
  • noun a treatise advancing a new point of view resulting from research; usually a requirement for an advanced academic degree synonyms: dissertation see more see less type of: tractate , treatise a formal exposition

Vocabulary lists containing thesis

A thorough survey of various textbooks, assignments, content area standards, and examinations yields the following list of words compiled by Jim Burke . You cannot expect to succeed on assignments if you do not understand the directions.

Persuade yourself to study this list of words related to argumentative writing. You'll learn all about making claims, supporting arguments with evidence, and maintaining an objective tone. It's no fallacy that reviewing these words will improve your credibility as a writer.

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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
  • corresponding author
  • dissertation
  • essay question
  • peer review

You can also find related words, phrases, and synonyms in the topics:

thesis | Intermediate English

Examples of thesis, collocations with thesis.

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(th s s) (-s z) A proposition that is maintained by argument. A dissertation advancing an original point of view as a result of research, especially as a requirement for an academic degree. A hypothetical proposition, especially one put forth without proof. The first stage of the Hegelian dialectic process. The long or accented part of a metrical foot, especially in quantitative verse. The unaccented or short part of a metrical foot, especially in accentual verse. The accented section of a measure. Greek, from , to put; see dh - . Senses 5 and 6, Middle English, from Late Latin, lowering of the voice, from Greek, downbeat.]

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Root Words | Definition, List & Examples

Published on 13 September 2023 by Kassiani Nikolopoulou .

A root word is the most basic form of a word that cannot be further divided into meaningful segments. Root words are used to form new words by adding letters at the beginning (i.e., a prefix) and/or the end (i.e., a suffix).

For example, the word “unfaithful” is made up of these different parts:

root words example

prefix        root word     suffix

By adding a suffix and/or a prefix to a root word like “faith”, we can make other words such as “faithful”, “faithfully”, “unfaithful”, and “unfaithfully”. These words are linked both in terms of spelling and meaning and are called a word family .

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Table of contents

What are root words, example root words, latin root words (free downloadable list), greek root words (free downloadable list), worksheet: root words, frequently asked questions about root words.

A root word is the fundamental unit of a word. A root word has nothing added at the beginning or the end. While some root words are standalone words in English, others need a prefix (like “anti-” or “un-”) and/or a suffix (like “-able” or “-ist”) to create a meaningful word.

For example, “cede” is a root word for other words like “recede” or “precedent”, but it is also a word on its own (meaning “to give up”). On the other hand, the root word “struct” does not constitute an understandable word in itself and other letters need to be added for it to make sense (e.g, “instructor”, “destruction”, “structural”).

Many words are created from Latin or Greek root words and usually cannot function as standalone words in English. For example, “chrono” comes from Greek and is the root of words like “chronology”, “synchronise”, and “chronic”, but it’s not a separate word in English.

Learning about root words can help you work out the meaning of new or longer words. When you know how to decode unknown words by identifying their root words and affixes (i.e., the prefix or suffix attached to them), you can navigate more complex or specialised texts. For example, many root words derived from Latin and Greek are common in math and science terminology, like “centi” (“hundred”) or “geo” (“earth”).

  • When added at the beginning of the word, they are called prefixes . Common prefixes include: “an-” (“without”), anti- (“against”), “hyper-” (“over”), “non-” (“lack of”), “pre-” (“before”), and “post-” (“after”).
  • When added at the end of the word, they are called suffixes . Common suffixes include: “-acy” (“state or quality”), “-able/-ible” (“capable of”), “-al” (“pertaining to”), “-ic/-ical” (“having the form”), and “-less” (“without”).

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Some root words can be used independently, while others need to be combined with a prefix (i.e., letters at the beginning), a suffix (i.e., letters at the end) or another root word (e.g., -logue) to form a standalone word.

act to do react, action, activity
centr/o/i center eccentric, egocentric, centrifuge
cycl circle cycle, bicycle, encyclopedia
domin master domineering, dominate, dominant
ego I ( singular) egomaniac, egotistic, superego
employ apply/make use of unemployment, employee, disemploy
form shape uniform, formality, information
friend friend unfriendly, befriend, friendship
norm a carpenter’s square/ a pattern abnormal, enormous, normalise
note comment upon keynote, denote, connotation
place spot misplaced, displaced, workplace
use take or hold user, useless, misuse

Root words vs. base words

The terms root words and base words are often used interchangeably. However, they are not exactly the same. While root words cannot always be used as standalone words in English, base words can be used on their own or combined with other words or letters to create complex words.

For example, “code” is a base word that can be used independently or to create other words like “barcode”, “decode”, or “codify”. On the other hand, the root word “aud” (which comes from Latin) cannot be used by itself and has to be combined with other letters to form words like “auditorium”, “audition”, and “audible”. Because many root words are of Latin or Greek origin, they don’t make sense as independent words in English.

Sometimes, root words and base words overlap. For example, the word “act” is a root word of Latin origin, but also a standalone word in English. By adding a prefix or suffix, we get new words like “reaction”, “exact”, and “actor”. In this case, “act” is both a root word and a base word.

Below is a list containing common Latin root words, their meaning, and examples of words based on each root. You can also download this list in the format of your choice below.

Download PDF list Download Google Docs list

Latin root words
anim(a) breath or soul animate, animal, unanimous
aqua water aquarium, aquatic, aquamarine
aud to hear/listen audio, inaudible, audition
bene good benefactor, benefit, benign
brev short abbreviation, brevity, brief
cand/cend to glow/shine incandescent, candid, candidate
carn meat or flesh carnivorous, carnage, reincarnation
cred to believe/trust incredible, credentials, creed
dict/dic to say dictionary, diction, dedicate
doc to teach doctrine, docile, document
don to give/grant donor, condone, pardon
duce/duct to lead deduce, induction, produce
hospit host, guest hospital, inhospitable, hostess
jur/jus law/right/oath conjure, jurisdiction, justice
libr book library, libretto, librarian
luc/lum brightness/clarity elucidate, lucid, illuminate
magn great/large magnanimous, magnificent, magnifying
manu hand manuscript, manicure, manipulate
pac peace Pacific, pacifier, pacifist
port to carry export, import, reporter
scrib/script to write describe, script, nondescript
sens to feel sense, consensus, desensitise
terr earth terrain, territory, extraterrestrial
vac empty evacuate, vacancy, vacuum
vis/vid to see invisible, video, evidence

Below is a list containing common Greek root words, their meaning, and examples of words based on each root. You can also download this list in the format of your choice below.

Greek root words
aero air aerodynamic, aeronautics, aerobic
aesthet related to the senses aesthetic, anesthetic, anesthesia
anthrop human anthropology, misanthrope, philanthropist
astro/aster star astronomy, astronaut, asteroid
auto self automatic, autobiography, autofocus
biblio book bibliography, bible, bibliophile
bio life biology, biography, symbiosis
chrome color monochrome, chromosome, chromatic
chrono time chronicle, chronological, synchronise
cosm(o) world/universe cosmology, cosmopolitan, microcosm
dyn power dynamic, dynamite, electrodynamics
gnos know diagnosis, prognosticate, agnostic
graph write telegraph, calligraphy, geography
hydr water hydrogen, hydration, dehydrate
logy study epistemology, ecology, trilogy
mania frenzy mania, megalomaniac, egomania
melan black melatonin, melamin, melancholy
metr/meter measure metric, asymmetry, diameter
narc numbness/sleep narcotic, narcolepsy, narcosis
paleo old paleontology, Paleolithic, paleobotany
phon sound/voice microphone, telephone, symphony
photo light photograph, photon, photocopy
psych soul/spirit psychology, psychiatrist, psychic
rhe flow rhythm, rheology, diarrhea
schem shape/manner scheme, schematic, schemer
therm heat hypothermia, thermometer, thermostat

Base words can stand alone, but can also be combined with other letters to create new words.

act transaction
appear disappear
break unbreakable
care careful
color discolored
do undo
harm harmful
honest honestly
hope hopeless
kind kindness
like dislike
love beloved
mark unmarked
pack unpack
paint repainted
place displacement
play downplay
reason unreasonable
spell spellbound
worth worthless

Want to test your understanding of root words? Try the worksheet below. In each sentence, see if you can identify the root word(s) of the highlighted word.

  • Answers & explanation
  • The hotel lost our reservation, and the receptionist was really unhelpful .
  • We came to a unanimous decision that more staff is needed during peak hours.
  • ANOVA is an abbreviation of “Analysis of Variance”.
  • My father is agnostic when it comes to religious matters.
  • One of the three aqueducts supplying water to the Los Angeles area is from the Colorado River.
  • The root word is help . The word “unhelpful” is made of three parts: “un-” (prefix), ”help” (root word), and “ful” (suffix).
  • The root word is anim . The word “unanimous” is made of two parts: “unus” (meaning “one” in Latin) and “animus” (meaning “spirit” or “mind” in Latin).
  • The root word is brev . The word “abbreviation” comes from Latin “ad” (prefix meaning “to”) and “breviare” (“shorten”), from brevis (“short”).
  • The root word is gnost . The word “agnostic” is made of three parts: “a” (prefix meaning “not” or “without”), “gnost” (root word meaning “to know” in Greek) and “ic” (suffix).
  • This word contains two Latin root words: aqua (“water”) and duct (“to lead”).

Although there is no particular rule for finding the root of a word, one way to do this is to check if the word has any affixes (suffix and/or prefix) added to it.

For example, the word “hyperactive” has the prefix “hyper-” (meaning “over”) and the suffix “-ive” (meaning “having the nature of”). If we remove the affixes, we get the root word (“act”).

The root word “dorm” means “sleep” in Latin. So words with this root word will have a meaning related to sleep. For example, the words “dormant,” “dormitory,” and “dormouse” all come from the same root word.

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Kassiani Nikolopoulou

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Definition of thesis noun from the Oxford Advanced American Dictionary

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  • formulate/advance a theory/hypothesis
  • build/construct/create/develop a simple/theoretical/mathematical model
  • develop/establish/provide/use a theoretical/conceptual framework/an algorithm
  • 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/calculations
  • take/record measurements
  • 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 behavior
  • 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
  • analyze/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

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theses
a statement or proposition put forward and supported by proof or argument. , , , , , ,
an essay or dissertation, esp. one based on research or critical study, submitted as a requirement for an advanced academic degree. , , , , , , ,
the opening of a dialectical argument or process, followed by antithesis and resolved in synthesis.
the accented part of a musical measure; downbeat. , ,
, , , , , , , , , ,
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Etymology

dissertation (n.)

1610s, "discussion, debate" (a sense now obsolete), from Late Latin dissertationem (nominative dissertatio ) "discourse," noun of action from past-participle stem of Latin dissertare "debate, argue, examine, harangue," frequentative of disserere "discuss, examine," from dis- "apart" (see dis- ) + serere "to join together, put in a row, arrange (words)," from PIE root *ser- (2) "to line up."

Sense of "formal, written treatise" is from 1650s. Meaning "research paper required as a final project for a Ph.D or other doctoral degree" is attested by 1877 in reference to continental universities; it was in use in the U.S. by 1890. Related: Dissertational . There is no regular verb to go with it: Dissert (1620s, from French disserter , from Latin dissertare ) is obsolete, and dissertate (1766) is marked "Unusual" in OED.

Entries linking to dissertation

Origin and meaning of dis-

word-forming element of Latin origin meaning 1. "lack of, not" (as in dishonest ); 2. "opposite of, do the opposite of" (as in disallow ); 3. "apart, away" (as in discard ), from Old French des- or directly from Latin dis- "apart, asunder, in a different direction, between," figuratively "not, un-," also "exceedingly, utterly." Assimilated as dif- before -f- and to di- before most voiced consonants.

The Latin prefix is from PIE *dis- "apart, asunder" (source also of Old English te- , Old Saxon ti- , Old High German ze- , German zer- ). The PIE root is a secondary form of *dwis- and thus is related to Latin bis "twice" (originally *dvis ) and to duo , on notion of "two ways, in twain" (hence "apart, asunder").

In classical Latin, dis- paralleled de- and had much the same meaning, but in Late Latin dis- came to be the favored form and this passed into Old French as des- , the form used for compound words formed in Old French, where it increasingly had a privative sense ("not"). In English, many of these words eventually were altered back to dis- , while in French many have been altered back to de- . The usual confusion prevails.

As a living prefix in English, it reverses or negatives what it is affixed to. Sometimes, as in Italian, it is reduced to s- (as in spend , splay , sport , sdain for disdain , and the surnames Spencer and Spence ).

Proto-Indo-European root meaning "to line up."

It forms all or part of: assert ; assertion ; assort ; consort ; desert (v.) "to leave one's duty;" desertion ; dissertation ; ensorcell ; exert ; exsert ; insert ; seriatim ; seriation ; series ; sermon ; serried ; sorcerer ; sorcery ; sort .

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit sarat- "thread;" Greek eirein "to fasten together in rows;" Latin serere "to join, link, bind together," series "row, chain, series, sequence, succession;" Gothic sarwa (plural) "armor, arms;" Old Norse sörve "necklace of stringed pearls;" Old Irish sernaid "he joins together;" Welsh ystret "a row."

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Thesis ( Greek Root Word )

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COMMENTS

  1. thesis

    thesis. (n.). late 14c., "unaccented syllable or note, a lowering of the voice in music," from Latin thesis "unaccented syllable in poetry," later (and more correctly) "stressed part of a metrical foot," from Greek thesis "a proposition," also "downbeat" (in music), originally "a setting down, a placing, an arranging; position, situation" (from reduplicated form of PIE root *dhe-"to set, put").

  2. Thesis Definition & Meaning

    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. Did you know?

  3. THESIS Definition & Meaning

    Thesis definition: a proposition stated or put forward for consideration, especially one to be discussed and proved or to be maintained against objections. See examples of THESIS used in a sentence.

  4. thesis

    Noun [ edit] thesis (plural theses) ( 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 degree in the UK; a dissertation .

  5. Thesis

    The noun 'thesis' has its etymological roots in ancient Greek.It is derived from the Greek word 'θέσις' (thésis), which means 'a setting down' or 'a position.' In the context of ancient Greece, 'thesis' was used to refer to a proposition or statement that was put forward as the basis of an argument or discussion.It represented a foundational idea or premise that was to be maintained or ...

  6. thesis, n. meanings, etymology and more

    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.

  7. Thesis

    thesis: 1 n an unproved statement put forward as a premise in an argument Type of: assumption , premise , premiss a statement that is assumed to be true and from which a conclusion can be drawn n a treatise advancing a new point of view resulting from research; usually a requirement for an advanced academic degree Synonyms: dissertation Type ...

  8. thesis noun

    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.

  9. THESIS

    THESIS definition: 1. a long piece of writing on a particular subject, especially one that is done for a higher…. Learn more.

  10. THESIS Definition & Usage Examples

    Thesis definition: a proposition stated or put forward for consideration, especially one to be discussed and proved or to be maintained against objections. See examples of THESIS used in a sentence.

  11. Etymonline

    The online etymology dictionary (etymonline) is the internet's go-to source for quick and reliable accounts of the origin and history of English words, phrases, and idioms. It is professional enough to satisfy academic standards, but accessible enough to be used by anyone.

  12. THESIS

    THESIS meaning: 1. a long piece of writing on a particular subject, especially one that is done for a higher…. Learn more.

  13. American Heritage Dictionary Entry: thesis

    the·sis (th ē s ĭ s) Share: Tweet. n. pl. the·ses (-s ē z) 1. A proposition that is maintained by argument. 2. A dissertation advancing an original point of view as a result of research, especially as a requirement for an academic degree. 3. A hypothetical proposition, especially one put forth without proof.

  14. Thesis Definition & Meaning

    Thesis definition: A proposition that is maintained by argument. A proposition maintained or defended in argument, formerly one publicly disputed by a candidate for a degree in a medieval university.

  15. THESIS definition and meaning

    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.

  16. Thesis Definition & Meaning

    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 ...

  17. Root Words

    A root word is the fundamental unit of a word. A root word has nothing added at the beginning or the end. While some root words are standalone words in English, others need a prefix (like "anti-" or "un-") and/or a suffix (like "-able" or "-ist") to create a meaningful word.

  18. thesis noun

    Definition of thesis noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

  19. thesis

    It's an interesting thesis, but you haven't provided enough evidence to convince me of its validity.Martin Luther put forward the thesis that one can achieve one's own salvation without the intermediary of a priest. synonyms: exposition, premise, proposition similar words: argument, hypothesis, statement, theorem, theory: definition 2:

  20. dissertation

    Proto-Indo-European root meaning "to line up." It forms all or part of: assert; ... "unaccented syllable or note," from Latin thesis "unaccented syllable in poetry," later (and more correctly) "stressed part of a metrical foot," from Greek thesis "a proposition," also "downbeat" (in music), originally "a setting down, a placing, an arranging ...

  21. THESIS definition in American English

    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.

  22. Thesis ( Greek Root Word ) Flashcards

    Thesis. A position taken in a argument supported by a set of reasons. Theme. An essay or composition on a certain subject with a statement and supporting reasons. Parenthesis. (Para - beside) - statement beside (or inside) a main sentence. Synthetic. (Syn-Together) elements put together to make a material like a natural one (synthetic rubber ...