Proper noun
WAI-ARIA
(Web) Initialism of Web Accessibility Initiative-Accessible Rich Internet Applications (technical specification published by the W3C that specifies how to increase the accessibility of Web pages)
The World Wide Web Consortium urges people to use WAI-ARIA in order to avoid trademark issues and confusion.
Microdata is another technology that’s rapidly gaining adoption and support, but, unlike WAI-ARIA, it’s technically part of HTML5. Source: Internet
Opera 9.5 supports parsing WAI-ARIA in HTML with the attributes in a null namespace ("in no namespace"), as per the latest decisions on WAI-ARIA at the time Opera 9.5 was released. Source: Internet