Definitions for "dynamic URL"
Keywords:  ampersands, url, fly, query, merely
a page address
a web address of a dynamic page
Web pages that are normally created "on the fly" from text within a data base . Dynamic URLs normally contain query strings including ? , & and +, = etc, other tracking URLs can also be grouped with dynamic URLs including web site pages that use session tracking ID's. The search engine spiders/robots dislike dynamic URLs as they may end up in a loop which traps the spider/robot and may even cause the server to crash in addition dynamic urls can create duplicate content, which is another no no to a search engine index