what is Canonicalization in SEO?

[Bestseoservice]

Definition:

Canonicalization for SEOs refers to normalizing (redirecting to a single dominant version) multiple URLs. can anyone know about some other definition please Explain

[WebOutGateway]

Canonicalization is one of the most important aspects of organic SEO. Good canonicalization
means search engines crawl more pages of your site;
it means that link authority and PageRank get consolidated, so you have a stronger link profile;
and it means fewer broken links from other sites.

Canonicalization means "every resource on your web site has
a single web address." Single web address means there’s only
one Uniform Resource Locator (URL) for each page of
content, image, video, etc..

Source: http://searchengineland.com/8-canonicalization-best-practices-in-plain-english-44475