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+[Back to 3 Understandable index](index.md)
+
+# 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
+
+[Back to 3 Understandable index](index.md)