A web address of a web page where content is stored in a database and fetched by a user query. These pages can have only one HTML file, but content will be unique every time the database is queried. This is why the URL changes every time there is a query. These URLs are non-descriptive and make no sense when read since they include link parameters.

Example: www.dynamicurl.com/forums/thread.php?threadid=12345&sort=date