DictionarychapterSection of a book
noun

chapter

CHAP-ter/ˈtʃæptər/

A major subdivision of a larger work or organization.

A small Roman numeral marks the new chapter in the open book.

An open hardcover book at the beginning of a new chapter, marked by a single small Roman numeral and a large blank area above restrained, nonlegible ink strokes suggesting the opening paragraph.
Etymology

Capitulum literally meant “little head,” but also named a main division of a book. Its parent word for “head” already had a writing sense, “division” or “paragraph,” making the book sense an inherited figurative use.

In context

Bookfox1:54
for most of the chapter endings in this book, the main character is on a quiz show
If you don't use these 10 ways to end chapters, you'll lose readers

More examples

  • Our local chapter organizes a monthly cleanup.
  • Retirement opened a new chapter in his life.
  • The book's third chapter explains the experiment.

Forms

chapter · chapters

Similar words

section
Section is any subdivision; chapter is usually a major named division or organizational unit.