thesis

From Wiktionary
thesis is on the Academic Word List.

Pronunciation[change]

Noun[change]

Singular
thesis

Plural
theses

  1. (countable) A thesis is a long paper that university students at the masters or doctoral level write.
    I finished my coursework and have been working on my thesis for about a year now.
    She's writing her thesis on the effects of TV on children.
  2. (countable) A thesis is a main idea or argument that is developed or explained.
    This book has three major theses.
    If you're going to write about this, you're going to have trouble supporting your thesis.