However, if we're talking about the root word within the word "bibliographical," it would be "biblio". This root comes from Greek and means "book" or "scroll."
Therefore, the meaning of "bibliographical" can be broken down as follows:
* biblio (book) + graphical (relating to writing or description) = bibliographical (relating to the description of books)
Let me know if you have any other words you'd like to explore!