کتاب

A book is a document, product, publication, and form of communications media. It has characteristic features including a title, author, publishing house, and International Standard Book Number. The content of a book consists of text and chapters. Books serve as a source of information, entertainment, education, and critical thinking.

The subject is represented by Unicode characters such as "📙", "📘", "📗", and "📖". It is categorized under "Books" in Commons and has a main category of Category:Books. The topic is maintained by WikiProject Books and has a main Wikimedia portal at Portal:Books. It is described by sources including the Brockhaus and Efron Encyclopedic Dictionary, Encyclopædia Britannica 11th edition, Granat Encyclopedic Dictionary, and Pauly–Wissowa.

Books are referenced by 3,548 other encyclopedia articles. In PubMed, there are 69,238 entries for the query "book". The topic appears on focus lists for Wikipedia articles and has Stack Exchange tags for academia and tex. It is also associated with the hashtag "books".