METATAG
In HTML or XML,a tag used in the header of a page to provide information about the page.There may be multiple meta tags in a header,each with different information,that can be used to identify the creator of a web page ,the description,the keywords,date,and copyright.The most common use of a meta tag in online markating is the keyword and description tags,which tell the search engines that index metatags what description to use in their search query results.