RSS

RDF Site Summary, or Rich Site Summary, or Really Simple Syndication – A lightweight XML format for distributing news headlines and other content on the Web.

(Rich Site Summary or RDF [Resource Description Framework] Site Summary). An XML format for sharing content among different Web sites such as news items.

RSS is a protocol, an application of XML, that provides an open method of syndicating and aggregating Web content. Using RSS files, you can create a data feed that supplies headlines, links, and article summaries from your Web site.

Google:define:RSS