Absolute link
A link which shows the full URL of the page being linked at. Some links only show relative link paths instead of having the entire reference URL within the a href tag.
Example of a relative link:
<a href="/index.html">link</a>
Example of a absolute link:
<a href="http://www.domain.com/index.html">link</a>
Due to canonicalization and hijacking related issues it is typically preferred to use absolute links over relative links. Read more about Absolute versus relative linking in this blog post by the Search Engine Guide.
