Meaning & use
dissertation
A long, formal piece of writing, based on original research, submitted especially for an advanced academic degree.
See it in a sentence
She spent two years researching and writing her dissertation on medieval trade routes.
His dissertation examined how climate change affects migratory bird patterns in the Arctic.
A note on using this word
In American English a dissertation usually refers to doctoral-level work, while a thesis often refers to a master's project, though usage varies by country.
Words with a similar meaning
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