URL stands for Uniform Resource Locator. It can be thought of as an address for a webpage or file on the internet. URLs follow a standard that defines a protocol, the host and path for a particular item. For example, http://java.about.com/od/javaglossary/Glossary_of_Java_Terms.htm is the URL for this site's index of glossary terms. It's made up of the http protocol, which lets a browser know how to retrieve the webpage, the java.about.com host name and the /od/javaglossary/Glossary_of_Java_Terms.htm path name to the file on the host for the web page.