dissertation
dissertation — noun
1. a formal, in-depth academic paper based on original research, written by a gradu
a formal, in-depth academic paper based on original research, written by a graduate student as the final requirement for earning a master’s or doctoral degree
Priya spent two years writing her dissertation on renewable energy policy in Southeast Asia.
collocation: write a dissertation + on [topic]
Rohan successfully defended his dissertation on climate adaptation strategies in June.
collocation: defend a dissertation
Leila chose a dissertation topic that combined her interests in public health and urban planning.
The doctoral dissertation examines how indigenous communities pass their languages to younger generations.
After months of revisions, the PhD candidate finally submitted his dissertation to the committee.
- thesis
often used for master’s level work; in some systems the two terms are swapped
- paper
much shorter and less formal; does not require original research
- treatise
more formal and literary in tone; not tied to degree requirements
- monograph
a book-length work on a single subject; not necessarily for a degree
用法筆記
Dissertation is most often used for doctoral (PhD) work; thesis may refer to master’s or bachelor’s level projects, though the distinction varies by institution and country. American English tends to pair dissertation with PhD and thesis with master’s; British English often reverses this.
常見錯誤
❖ 'I wrote a dissertation for my English 101 class.' ✅ 'I wrote a paper for my English 101 class.' — A dissertation is a long, formal requirement for an advanced degree, not a short class assignment.
❖ 'My dissertation is three pages long.' ✅ 'My dissertation is over one hundred pages long.' — A dissertation is a substantial research document, typically 80–200 pages or more.