What does canonical URL mean?

Related questions

1. What is a 301?
2. What is self referencing Hreflang?
3. How important is Hreflang?
4. What does Canonicalized mean?
5. What is the difference between canonical form and standard form?
6. What is meant by canonical representation in logic design?
7. What is meant by canonical representation?
8. What does a canonical tag do?
9. What is canonical path?
10. What does Canonical mean in the Bible?

Tags

1. #pages
2. #search
3. #canonical
4. #similar
5. #words
6. #specifies
7. #refers
8. #other
9. #found
10. #webpage
11. #preferred
12. #attribute
13. #accessible
14. #multiple
15. #element
16. #engines
17. #different
18. #content