Exposition is a mode of discourse, a way of categorizing texts by purpose or aim. When writers or speakers engage in exposition, their purpose is to inform readers or listeners about a topic.

Texts that are categorized chiefly as acts of exposition are also called Expository Writing.

Key Terms: Expository Writing; Modes of Discourse; Styles of Writing

Texts that are defined as exposition may be small bits such as a sentence or a paragraph. However, the term expository writing is more frequently used to describe a genre of discourse, such as an instruction manuals, a problem definition, or a resume.