dissertation

noun

dis·​ser·​ta·​tion ˌdi-sər-ˈtā-shən 

: an extended usually written treatment of a subject

specifically : one submitted for a doctorate

wrote her dissertation on an obscure 16th-century poet

dissertational

ˌdi-sər-ˈtāsh-nəl 

-ˈtā-shə-nᵊl

adjective

Examples of dissertation in a Sentence

He wrote his dissertation on an obscure 16th-century poet.

Recent Examples on the Web

To the Senate, Amy split her allotted two minutes between detailing personal tragedy and defending her dissertation on male coaches’ perceptions of their role and capacity in supporting male student athletes’ mental health. —Sam Cohn, Baltimore Sun, 16 May 2024

In December, Tillman successfully defended her dissertation, becoming the youngest person to earn a doctoral degree in integrated behavioral health at Arizona State, according to associate professor Leslie Manson. —Melissa Noel, Essence, 15 May 2024

Word History

First Known Use

1651, in the meaning defined above

Kids Definition

dissertation

noun

dis·​ser·​ta·​tion ˌdis-ər-ˈtā-shən 

: a long usually written treatment of a subject