- A specific visitor to a Web site, as distinguished from other such visitors. For example, for a given period a Web site may have 100 hits, all by a single user, or 10 by 10 unique users, and so on. Individual users are usually distinguished by their IP number, but this may not be accurate, as a single IP number may identify multiple users, and a single user may have a dynamic IP address. Also called unique visitor, or visitor (1).
- synonymunique visitor