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Definition of thesis

thesis

/ˈθiːsɪs/
the · sis

Plural:theses
•
Adjective:thetic
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thesis Lexical Profile

thesis Game Scores & Validity

• noun

1

A statement, theory, or central premise that is put forward to be maintained, argued, or proved.

Example

"Her central thesis is that early childhood literacy directly influences long-term economic mobility."


2

A long, formal essay or treatise involving personal research, written by a candidate for a university degree.

Example

"He spent the entire summer in the university archives researching and writing his master's thesis."


3

In Hegelian philosophy, the initial stage in a dialectical process in which a concept or proposition is put forward before being confronted by its opposite (the antithesis).

Example

"In dialectical reasoning, the tension between the initial thesis and its antithesis is ultimately resolved through synthesis."

Synonyms
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Antonyms
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Word Nuance & Usage

The plural of 'thesis' is 'theses' (pronounced THEE-seez). In American English, 'thesis' typically refers to a master's or undergraduate research project while 'dissertation' refers to a doctoral work, whereas in British English this distinction is often reversed.

• Rhymes for thesis

Word Origin & Etymology

Borrowed in the late 14th century via Late Latin from Ancient Greek 'thesis', meaning 'a setting down, placement, or proposition', derived from the verb 'tithenai' ('to put or place').

Cite this Entry


Wordmom. (2026). Definition of Thesis. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/thesis
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