"A-format" の定義と意味

What is "A-format"?

A-format refers to a standard size for paperback books, typically measuring around 4.33 inches by 7 inches, or 110 mm by 178 mm. This smaller size is commonly used for mass-market paperbacks, making them portable and easy to hold. A-format books are often printed in large quantities and are usually less expensive, making them a popular choice for novels and other general fiction titles. The compact size allows for convenience in transportation and storage while maintaining a readable text layout.