URL

Acronym for Uniform Resource Locator (previously Universal Resource Locator). The global address of a website, document, or other resource on the Internet. For example, http://www.salesforce.com.

For links to external websites, use the website name as the link text, such as You can download the latest Acrobat Reader from Adobe. If it’s not possible to use the website name in a coherent way, use the full URL for the link text excluding the http:// prefix, such as You can download the latest Acrobat Reader from www.adobe.com/products/acrobat/readstep2.html. If, however, the prefix is anything other than http://, such as https:// or ftp://, include the prefix.

Acceptable as an acronym by itself. Use a URL, not an URL.