The standard addressing system for the World Wide Web. A URL consists of two parts: The first part indicates the protocol to use (for example http://), and the second part specifies the IP address or the domain name and the path where the desired information is located (for example www.securityfocus.com/glossary).
A string of alphanumeric characters that specify an Internet resource. For example:
A URL consists of the protocol (http), the domain name of the computer on which the information is stored (symantecexample.com), and the location of the content (news).
A string of characters in a standardized format that refers to a resource on the Internet by its location.