---
title: Query extension
slug: '1397'
canonical_url: https://docs.coveo.com/en/1397/
collection: glossary
source_format: adoc
---
# Query extension
A {doctitle} is a named encapsulation of a [query](https://docs.coveo.com/en/231/) that can contain arguments, including other query extensions.
They allow developers to build enhanced queries by integrating contextual business information and return highly relevant content to end users.