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# 3.1.3 Unusual Words

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

## What it is

A mechanism is available for identifying specific definitions of words or phrases used in an unusual or restricted way, including idioms and jargon.

## How to test

- Check: A mechanism is available for identifying specific definitions of words or phrases used in an unusual or restricted way, including idioms and jargon.
- Use the sufficient techniques below as acceptable methods when applicable.

## Sufficient techniques (W3C)

- G101: Providing the definition of a word or phrase used in an unusual or restricted way
- G55: Linking to definitions
- H40: Using description lists
- G112: Using inline definitions
- H54: Using the dfn element to identify the defining instance of a word
- G62: Providing a glossary
- G70: Providing a function to search an online dictionary

## Resources

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

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