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tesis

TEH-sees/ˈtesis/

“tesis” means “thesis” in Spanish. It has 2 different meanings depending on context:

thesis, dissertation

Also: final project
NounfB1formal
A thick, bound book with a plain cover sitting on a wooden desk next to a graduation cap.

📝 In Action

Tengo que terminar mi tesis para graduarme en junio.

A2

I have to finish my thesis to graduate in June.

Ella pasó meses investigando en la biblioteca para su tesis doctoral.

B1

She spent months researching in the library for her doctoral dissertation.

El jurado hizo preguntas muy difíciles durante la defensa de su tesis.

B2

The jury asked very difficult questions during his thesis defense.

Word Connections

Synonyms

  • disertación (dissertation)
  • memoria (report/final project)

Common Collocations

  • tesis doctoral – doctoral thesis/PhD dissertation
  • director de tesis – thesis advisor/supervisor
  • defender la tesis – to defend one's thesis

argument, premise

Also: proposition
NounfC1formal
Two people standing in front of a large presentation board, one person pointing to a clear chart illustrating a point.

📝 In Action

La tesis principal del autor es que la tecnología nos aleja.

B2

The author's main argument is that technology pulls us apart.

Sus planteamientos refuerzan la tesis de la evolución.

C1

His explanations reinforce the theory of evolution.

Es difícil refutar una tesis tan bien fundamentada.

C1

It is difficult to refute such a well-founded premise.

Word Connections

Synonyms

Antonyms

  • antítesis (antithesis/opposite)

Common Collocations

  • tesis central – main argument
  • sostener una tesis – to maintain/hold a position

Translate to Spanish

✏️ Quick Practice

Quick Quiz: tesis

Question 1 of 3

How do you say 'the theses' (plural) in Spanish?

📚 More Resources

👥 Word Family▼
tesista(thesis writer) — Noun
hipótesis(hypothesis) — Noun
antítesis(antithesis) — Noun
sintetizar(to synthesize) — Verb
🎵 Rhymes▼
crisisénfasisparálisis
📚 Etymology▼

From the Greek word 'thesis,' which meant 'a placing' or 'an arrangement.' It described the act of 'putting down' an idea or a proposition.

First recorded: 15th century

Cognates (Related words)

English: thesisFrench: thèseItalian: tesi

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Frequently Asked Questions

Is 'tesis' ever masculine?

No, 'tesis' is always feminine (la tesis), even though its ending might look similar to some masculine words.

What is the difference between 'tesis' and 'hipótesis'?

A 'hipótesis' is a guess or a starting idea that hasn't been proven yet. A 'tesis' is the final conclusion or the full argument presented with evidence.

Does 'tesis' only refer to PhDs?

While common for PhDs, it is used for any final research project required for a university degree (undergraduate, Master's, or Doctorate).