Writing & StyleStyle guide

Writing Accessible Glossary Definitions

Writing Accessible Glossary Definitions focuses on the accessibility purpose of making unusual-word meanings available, distinct from the existing guide about alphabetizing and formatting a glossary section.

Quick answer

When unusual, restricted, or specialized words need explanation, provide a definition that readers can reach from the content; a glossary can be one appropriate mechanism.

Key details

Core IssueWCAG 2.2 guidance for unusual words calls for a mechanism that makes specific definitions available; a glossary is one documented method.
Registerweb accessibility and explanatory content

Important caveats

Scope Boundary

This page is about accessible definition availability and wording, not the alphabetical back-matter formatting of a conventional glossary.

Further guidance

Content

Define the term in language that resolves the meaning needed in the current content and make that definition available from the term or page.

Purpose

Readers should be able to determine the intended meaning of unusual or specialized words.

Sources and evidence

Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.

  1. Understanding Success Criterion 3.1.3: Unusual Words — WCAG 2.2 (opens in a new tab)World Wide Web Consortium (W3C) · W3C WCAG 2.2 Understanding guidance for making definitions of unusual or restricted-use words available, including via a glossary.

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