Định Nghĩa và Ý Nghĩa của "royal octavo"

What is "royal octavo"?

Royal octavo is a book format that is larger than standard octavo but smaller than quarto. It is created by folding a large sheet of paper into eight equal parts, resulting in eight leaves or sixteen pages per sheet. Royal octavo books typically measure about 6.25 inches by 10 inches, which is approximately 160 mm by 250 mm. This size is often used for various types of books, including literary works, academic texts, and reference materials, offering a balanced size for readability and presentation.