What does ISBN stand for?

The term ISBN stands for International Standard Book Number. This unique identifier is assigned to books and other publications, allowing for easier cataloging, ordering, and inventory management in libraries and bookstores. Each ISBN is a numeric code that helps distinguish one book from another, which is important in the publishing industry for tracking sales and distribution.

When a book is published, it receives an ISBN that reflects its format and edition, ensuring that variations—such as hardcover, paperback, or digital versions—are appropriately labeled. This system facilitates the efficient exchange of information about books across various sales and distribution platforms, making it essential for both publishers and consumers.

The other options provided do not accurately reflect the established meaning of ISBN, illustrating common misconceptions about publishing terminology.