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# 3.1.4 Abbreviations

- Level: AAA
- Guideline: 3.1 Readable
- Principle: 3 Understandable

## What it is

A mechanism for identifying the expanded form or meaning of abbreviations is available.

## How to test

- Check: A mechanism for identifying the expanded form or meaning of abbreviations is available.
- Use the sufficient techniques below as acceptable methods when applicable.

## Sufficient techniques (W3C)

- G102: Providing the expansion or explanation of an abbreviation
- G97: Providing the first use of an abbreviation immediately before or after the expanded form
- G55: Linking to definitions
- PDF8: Providing definitions for abbreviations via an E entry for a structure element
- G62: Providing a glossary
- G70: Providing a function to search an online dictionary

## Advisory techniques (W3C)

- H28: Providing definitions for abbreviations by using the abbr element

## Resources

- WCAG 2.2 SC: https://www.w3.org/TR/WCAG22/#abbreviations
- Understanding: https://www.w3.org/WAI/WCAG22/Understanding/abbreviations.html
- Quick reference: https://www.w3.org/WAI/WCAG22/quickref/?versions=2.2#abbreviations

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