Definition

Noun: A long, formal piece of writing on a particular subject, especially one written as a requirement for a university degree, typically a doctorate. It presents original research and advances a new point of view or substantial argument based on that research.

Usage

A "dissertation" is a substantial academic document that demonstrates a student's ability to conduct independent research and contribute new knowledge to their field. It is the capstone project for a doctoral (Ph.D.) degree. The word is used formally in academic contexts.

Examples

• She spent three years conducting experiments for her dissertation on marine biology.
• The final requirement for his Ph.D. was to defend his dissertation before a committee of professors.
• Her dissertation explored the economic impacts of renewable energy policies.

Advanced Usage

• "To write a dissertation on/upon [topic]": This is the standard construction for stating the subject of the dissertation.
  • He is writing his dissertation on 19th-century French poetry.
• "Dissertation defense" (or "viva voce"): The formal presentation and oral examination of the dissertation before a committee.
  • She passed her dissertation defense with distinction.

Variants and Related Words

• Dissertate (verb, rare): To discourse formally; to write or speak at length on a subject.
• Dissertator (noun, rare): A person who writes a dissertation.
• Thesis: While often used interchangeably in some regions, a "thesis" can sometimes refer to a similar but shorter work for a master's degree, whereas a "dissertation" is typically for a doctorate. In other academic systems, the terms are reversed.

Synonyms

• Thesis: A long essay or dissertation involving personal research, written for a degree.
• Treatise: A written work dealing formally and systematically with a subject.
• Monograph: A detailed written study of a single specialized subject.

Related Phrases and Collocations

• Doctoral dissertation: Specifies the dissertation written for a Ph.D.
• Dissertation committee: The group of faculty members who guide and evaluate the dissertation.
• Dissertation advisor/supervisor: The primary professor guiding the research and writing.
• Dissertation abstract: A brief summary of the dissertation's contents.

Noun

1. a treatise advancing a new point of view resulting from research; usually a requirement for an advanced academic degree