Word
dissertation
Phoneticsdis·ser·ta·tion, stress on the third syllable
US/ˌdɪsɝˈteɪʃən/
UK/dɪsətˈeɪʃən/
Definitions
01academic research paper
C1 · Advanced Countable noun Science Academic · Formal
n. a very long essay or research project you write to finish a university degree.
n. a formal exposition of a subject, specifically a research paper submitted for an academic degree. In British English, this often refers to undergraduate or master's work, whereas in American English, it typically denotes doctoral research.
“She spent the entire summer in the library finishing her dissertation on medieval history.”
“The candidate successfully defended her dissertation, which provided a comprehensive analysis of socio-economic shifts in post-war urban environments.”
Usage
Commonly used with the verbs 'write', 'submit', or 'defend'.
Teaching tip
Note the regional difference: in the UK, a 'thesis' is usually for a PhD and a 'dissertation' for a Bachelor's/Master's; in the US, the terms are often reversed or used interchangeably.
02lengthy discourse
C2 · Proficiency Countable noun Formal · Literary
n. a long, serious speech or piece of writing about a particular topic.
n. a lengthy and formal discourse or treatise on a specific subject, not necessarily for a degree.
“The professor gave a long dissertation on the importance of classical music.”
“His dinner table conversation often turned into a lengthy dissertation on the failings of modern architecture, much to the exhaustion of his guests.”
Real-World Examples
“This article is adapted from her in-progress doctoral dissertation.” “His dissertation examines what reading specialists understand about K–3 Spanish-speaking students' home language and literacy skills and how they can leverage them to build English proficiency.” “In his doctoral dissertation, researcher Zhe Zhu explored how generative AI tools such as ChatGPT and Gemini are changing workplaces and influencing employees' experiences on the job.” Etymology
From Latin dissertātiō, from dissertō.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Domain
- Exam level
- CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
- Frequency
- Frequent
- Level
- C1 · Advanced
- Updated
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englishreference.com/q/dissertation