3.1.3 Unusual Words
Conformance level: AAA
Criterion released in WCAG version: 2.0
TL;DR: Explain or provide help for idioms, jargon, and unusual terms so users can understand the content without specialised background knowledge. Prefer plain language and add definitions when needed.
Official description of the success criterion
A mechanism is available for identifying specific definitions of words or phrases used in an unusual or restricted way, including idioms and jargon.
What to do?
Provide definitions for unusual words or jargon.
Why is it important?
Helps users understand the meaning of uncommon terms.